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8.4
CVE-2022-49292: Linux kernel audio subsystem can allocate too large buffer
CVE-2022-49292 · published 1 year ago
Summary
The audio component of the Linux kernel could try to reserve a temporary memory buffer that is larger than the system can handle, potentially causing the system to stop the operation. This happens when unusually high channel counts or sample rates are used, leading to an overflow in the allocation size. Updating the kernel to the latest version applies a safety limit of 1 MB to prevent the oversized allocation.
What to do
- Update linux kernel to version 5.17.1.
- Update canonical linux-aws-5.4 to version 5.4.0-1078.84~18.04.1.
- Update canonical linux-azure-5.4 to version 5.4.0-1083.87~18.04.1.
- Update canonical linux-gcp-5.4 to version 5.4.0-1078.84~18.04.1.
- Update canonical linux-hwe-5.4 to version 5.4.0-117.132~18.04.1.
- Update canonical linux-ibm-5.4 to version 5.4.0-1028.32~18.04.1.
- Update canonical linux-oracle-5.4 to version 5.4.0-1076.83~18.04.1.
- Update canonical linux-raspi-5.4 to version 5.4.0-1065.75~18.04.1.
- Update canonical linux to version 5.4.0-117.132.
- Update canonical linux-aws to version 5.4.0-1078.84.
- Update canonical linux-azure to version 5.4.0-1083.87.
- Update canonical linux-azure-5.15 to version 5.15.0-1008.9~20.04.1.
- Update canonical linux-bluefield to version 5.4.0-1040.44.
- Update canonical linux-gcp to version 5.4.0-1078.84.
- Update canonical linux-hwe-5.15 to version 5.15.0-41.44~20.04.1.
- Update canonical linux-ibm to version 5.4.0-1026.29.
- Update canonical linux-intel-iotg-5.15 to version 5.15.0-1008.11~20.04.1.
- Update canonical linux-iot to version 5.4.0-1004.6.
- Update canonical linux-kvm to version 5.4.0-1068.72.
- Update canonical linux-lowlatency-hwe-5.15 to version 5.15.0-42.45~20.04.1.
- Update canonical linux-oracle to version 5.4.0-1076.83.
- Update canonical linux-raspi to version 5.4.0-1065.75.
- Update canonical linux-aws-fips to version 5.4.0-1078.84+fips1.
- Update canonical linux-azure-fips to version 5.4.0-1083.87+fips1.
- Update canonical linux-fips to version 5.4.0-1054.61.
- Update canonical linux-gcp-fips to version 5.4.0-1078.84+fips1.
- Update canonical linux to version 5.15.0-37.39.
- Update canonical linux-aws to version 5.15.0-1011.14.
- Update canonical linux-azure to version 5.15.0-1010.12.
- Update canonical linux-gcp to version 5.15.0-1008.12.
- Update canonical linux-gke to version 5.15.0-1008.10.
- Update canonical linux-ibm to version 5.15.0-1007.8.
- Update canonical linux-intel-iotg to version 5.15.0-1008.11.
- Update canonical linux-kvm to version 5.15.0-1010.11.
- Update canonical linux-lowlatency to version 5.15.0-37.39.
- Update canonical linux-oracle to version 5.15.0-1009.12.
- Update canonical linux-raspi to version 5.15.0-1011.13.
- Update canonical linux-realtime to version 5.15.0-1014.14.
- Update debian linux to version 5.17.3-1.
- Update linux linux to version a63af1baf0a5e11827db60e3127f87e437cab6e5 or later.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| – | linux | linux_kernel |
< 4.19.237 >= 4.20, < 5.4.188 >= 5.5, < 5.10.109 >= 5.11, < 5.15.32 >= 5.16, < 5.16.18 5.17 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Ubuntu:Nvidia-BlueField:24.04:LTS | canonical | linux-bluefield | All versions |
| – | linux | linux |
< a63af1baf0a5e11827db60e3127f87e437cab6e5 2.6.12 |
| Linux | linux | kernel |
>= 5.17.0, < 5.17.1 Fix: upgrade to 5.17.1
|
| Ubuntu:Pro:14.04:LTS | canonical | linux | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-lts-xenial | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-aws-hwe | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-gcp | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-hwe | All versions |
| Ubuntu:16.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-kvm | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-oracle | All versions |
| Ubuntu:Pro:FIPS:16.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.4 |
< 5.4.0-1078.84~18.04.1 Fix: upgrade to 5.4.0-1078.84~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-azure-5.4 |
< 5.4.0-1083.87~18.04.1 Fix: upgrade to 5.4.0-1083.87~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-gcp-5.4 |
< 5.4.0-1078.84~18.04.1 Fix: upgrade to 5.4.0-1078.84~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-hwe-5.4 |
< 5.4.0-117.132~18.04.1 Fix: upgrade to 5.4.0-117.132~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-ibm-5.4 |
< 5.4.0-1028.32~18.04.1 Fix: upgrade to 5.4.0-1028.32~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.4 |
< 5.4.0-1076.83~18.04.1 Fix: upgrade to 5.4.0-1076.83~18.04.1
|
| Ubuntu:18.04:LTS | canonical | linux-raspi-5.4 |
< 5.4.0-1065.75~18.04.1 Fix: upgrade to 5.4.0-1065.75~18.04.1
|
| Ubuntu:Pro:18.04:LTS | canonical | linux | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.3 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-azure-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-5.3 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-edge | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-gcp-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp-5.3 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gkeop-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-hwe | All versions |
| Ubuntu:18.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-kvm | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oem | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-oracle | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.3 | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-gcp-fips | All versions |
Showing 50 of 153. Show the rest
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:Pro:FIPS:18.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS:18.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS:18.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:FIPS:18.04:LTS | canonical | linux-gcp-fips | All versions |
| Ubuntu:20.04:LTS | canonical | linux |
< 5.4.0-117.132 Fix: upgrade to 5.4.0-117.132
|
| Ubuntu:20.04:LTS | canonical | linux-aws |
< 5.4.0-1078.84 Fix: upgrade to 5.4.0-1078.84
|
| Ubuntu:20.04:LTS | canonical | linux-azure |
< 5.4.0-1083.87 Fix: upgrade to 5.4.0-1083.87
|
| Ubuntu:20.04:LTS | canonical | linux-azure-5.15 |
< 5.15.0-1008.9~20.04.1 Fix: upgrade to 5.15.0-1008.9~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-bluefield |
< 5.4.0-1040.44 Fix: upgrade to 5.4.0-1040.44
|
| Ubuntu:20.04:LTS | canonical | linux-gcp |
< 5.4.0-1078.84 Fix: upgrade to 5.4.0-1078.84
|
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.15 |
< 5.15.0-41.44~20.04.1 Fix: upgrade to 5.15.0-41.44~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-ibm |
< 5.4.0-1026.29 Fix: upgrade to 5.4.0-1026.29
|
| Ubuntu:20.04:LTS | canonical | linux-intel-iotg-5.15 |
< 5.15.0-1008.11~20.04.1 Fix: upgrade to 5.15.0-1008.11~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-iot |
< 5.4.0-1004.6 Fix: upgrade to 5.4.0-1004.6
|
| Ubuntu:20.04:LTS | canonical | linux-kvm |
< 5.4.0-1068.72 Fix: upgrade to 5.4.0-1068.72
|
| Ubuntu:20.04:LTS | canonical | linux-lowlatency-hwe-5.15 |
< 5.15.0-42.45~20.04.1 Fix: upgrade to 5.15.0-42.45~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-oracle |
< 5.4.0-1076.83 Fix: upgrade to 5.4.0-1076.83
|
| Ubuntu:20.04:LTS | canonical | linux-raspi |
< 5.4.0-1065.75 Fix: upgrade to 5.4.0-1065.75
|
| Ubuntu:20.04:LTS | canonical | linux-aws-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-fde | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-azure-fde-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-intel-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.10 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.14 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.6 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-raspi2 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.8 | All versions |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-aws-fips |
< 5.4.0-1078.84+fips1 Fix: upgrade to 5.4.0-1078.84+fips1
|
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-azure-fips |
< 5.4.0-1083.87+fips1 Fix: upgrade to 5.4.0-1083.87+fips1
|
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-fips |
< 5.4.0-1054.61 Fix: upgrade to 5.4.0-1054.61
|
| Ubuntu:Pro:FIPS-updates:20.04:LTS | canonical | linux-gcp-fips |
< 5.4.0-1078.84+fips1 Fix: upgrade to 5.4.0-1078.84+fips1
|
| Ubuntu:Pro:FIPS:20.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS:20.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS:20.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:FIPS:20.04:LTS | canonical | linux-gcp-fips | All versions |
| Ubuntu:22.04:LTS | canonical | linux |
< 5.15.0-37.39 Fix: upgrade to 5.15.0-37.39
|
| Ubuntu:22.04:LTS | canonical | linux-allwinner-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws |
< 5.15.0-1011.14 Fix: upgrade to 5.15.0-1011.14
|
| Ubuntu:22.04:LTS | canonical | linux-aws-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure |
< 5.15.0-1010.12 Fix: upgrade to 5.15.0-1010.12
|
| Ubuntu:22.04:LTS | canonical | linux-azure-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp |
< 5.15.0-1008.12 Fix: upgrade to 5.15.0-1008.12
|
| Ubuntu:22.04:LTS | canonical | linux-gcp-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gke |
< 5.15.0-1008.10 Fix: upgrade to 5.15.0-1008.10
|
| Ubuntu:22.04:LTS | canonical | linux-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-ibm |
< 5.15.0-1007.8 Fix: upgrade to 5.15.0-1007.8
|
| Ubuntu:22.04:LTS | canonical | linux-intel-iot-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-intel-iotg |
< 5.15.0-1008.11 Fix: upgrade to 5.15.0-1008.11
|
| Ubuntu:22.04:LTS | canonical | linux-kvm |
< 5.15.0-1010.11 Fix: upgrade to 5.15.0-1010.11
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency |
< 5.15.0-37.39 Fix: upgrade to 5.15.0-37.39
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-5.17 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.0 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.1 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle |
< 5.15.0-1009.12 Fix: upgrade to 5.15.0-1009.12
|
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-raspi |
< 5.15.0-1011.13 Fix: upgrade to 5.15.0-1011.13
|
| Ubuntu:22.04:LTS | canonical | linux-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.5 | All versions |
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-realtime |
< 5.15.0-1014.14 Fix: upgrade to 5.15.0-1014.14
|
| Ubuntu:24.04:LTS | canonical | linux-raspi-realtime | All versions |
| Debian:12 | debian | linux |
< 5.17.3-1 Fix: upgrade to 5.17.3-1
|
Original advisory text
ALSA: oss: Fix PCM OSS buffer allocation overflow
In the Linux kernel, the following vulnerability has been resolved: ALSA: oss: Fix PCM OSS buffer allocation overflow We've got syzbot reports hitting INT_MAX overflow at vmalloc() allocation that is called from snd_pcm_plug_alloc(). Although we apply the restrictions to input parameters, it's based only on the hw_params of the underlying PCM device. Since the PCM OSS layer allocates a temporary buffer for the data conversion, the size may become unexpectedly large when more channels or higher rates is given; in the reported case, it went over INT_MAX, hence it hits WARN_ON(). This patch is an attempt to avoid such an overflow and an allocation for too large buffers. First off, it adds the limit of 1MB as the upper bound for period bytes. This must be large enough for all use cases, and we really don't want to handle a larger temporary buffer than this size. The size check is performed at two places, where the original period bytes is calculated and where the plugin buffer size is calculated. In addition, the driver uses array_size() and array3_size() for multiplications to catch overflows for the converted period size and buffer bytes.
References
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git Product
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49292... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-49292 Vendor Advisory
- https://ubuntu.com/security/CVE-2022-49292 Third Party Advisory
- https://git.kernel.org/linus/efb6402c3c4a7c26d97c92d70186424097b6e366 Third Party Advisory
- https://git.kernel.org/stable/c/0c4190b41a69990666b4000999e27f8f1b2a426b Third Party Advisory
- https://git.kernel.org/stable/c/5ce74ff7059341d8b2f4d01c3383491df63d1898 Third Party Advisory
- https://git.kernel.org/stable/c/7a40cbf3579a8e14849ba7ce46309c1992658d2b Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2022-49292 Third Party Advisory
- https://git.kernel.org/stable/c/a63af1baf0a5e11827db60e3127f87e437cab6e5 Third Party Advisory
- https://git.kernel.org/stable/c/e74a069c6a7bb505f3ade141dddf85f4b0b5145a Third Party Advisory
- https://git.kernel.org/stable/c/efb6402c3c4a7c26d97c92d70186424097b6e366 Third Party Advisory
- https://git.kernel.org/stable/c/fb08bf99195a87c798bc8ae1357337a981faeade Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2022-49292 Vendor Advisory
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker full control (estimated)
Severity
8.4
High
Type
CWE-787Out-of-bounds Write
Timeline
Published26 Feb 2025
Updated3 Nov 2026
First seen7 Mar 2026
Sources
CVE-2022-49292 · OSV
UBUNTU-CVE-2022-49292 · OSV
CVE-2022-49292 · NVD
CVE-2022-49292 · MITRE
DEBIAN-CVE-2022-49292 · OSV
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