7.8

CVE-2022-49842: linux Use After Free

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2022-49842DEBIAN-CVE-2022-49842
Published 01-05-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2022-49842 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.22%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
SUSE-SU-2025:01918-1SUSE-SU-2025:01966-1SUSE-SU-2025:01982-1SUSE-SU-2025:01983-1SUSE-SU-2025:01995-1SUSE-SU-2025:02173-1

Timeline

  1. 01-05-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: core: Fix use-after-free in snd_soc_exit() KASAN reports a use-after-free: BUG: KASAN: use-after-free in device_del+0xb5b/0xc60 Read of size 8 at addr ffff888008655050 by task rmmod/387 CPU: 2 PID: 387 Comm: rmmod Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl+0x79/0x9a print_report+0x17f/0x47b kasan_report+0xbb/0xf0 device_del+0xb5b/0xc60 platform_device_del.part.0+0x24/0x200 platform_device_unregister+0x2e/0x40 snd_soc_exit+0xa/0x22 [snd_soc_core] __do_sys_delete_module.constprop.0+0x34f/0x5b0 do_syscall_64+0x3a/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd ... </TASK> It's bacause in snd_soc_init(), snd_soc_util_init() is possble to fail, but its ret is ignored, which makes soc_dummy_dev unregistered twice. snd_soc_init() snd_soc_util_init() platform_device_register_simple(soc_dummy_dev) platform_driver_register() # fail platform_device_unregister(soc_dummy_dev) platform_driver_register() # success ... snd_soc_exit() snd_soc_util_exit() # soc_dummy_dev will be unregistered for second time To fix it, handle error and stop snd_soc_init() when util_init() fail. Also clean debugfs when util_init() or driver_register() fail.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

+0.01 pp

From 0.22% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu113 products
  • linuxAll versions (No fix recorded) | < 4.15.0-206.217 | < 5.4.0-144.161 | < 5.15.0-67.74
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1151.164 | < 5.4.0-1097.105 | < 5.15.0-1031.35
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ fb257897bf20c5f0e1df584bb5b874e811651263, < 41fad4f712e081acdfde8b59847f9f66eaf407a0 | ≥ fb257897bf20c5f0e1df584bb5b874e811651263, < 90bbdf30a51e42378cb23a312005a022794b8e1e | ≥ fb257897bf20c5f0e1df584bb5b874e811651263, < a3365e62239dc064019a244bde5686ac18527c22 | ≥ fb257897bf20c5f0e1df584bb5b874e811651263, < 2ec3f558db343b045a7c7419cdbaec266b8ac1a7 | ≥ fb257897bf20c5f0e1df584bb5b874e811651263, < 8d21554ec7680e9585fb852d933203c3db60dad1 | ≥ fb257897bf20c5f0e1df584bb5b874e811651263, < 34eee4189bcebbd5f6a2ff25ef0cb893ad33d51e | ≥ fb257897bf20c5f0e1df584bb5b874e811651263, < c5674bd073c0fd9f620ca550c5ff08d0d429bdd9 | ≥ fb257897bf20c5f0e1df584bb5b874e811651263, < 6ec27c53886c8963729885bcf2dd996eba2767a7 | 3.0
  • linux_kernel≥ 3.0, < 4.9.334 | ≥ 4.10, < 4.14.300 | ≥ 4.15, < 4.19.267 | ≥ 4.20, < 5.4.225 | ≥ 5.5, < 5.10.156 | ≥ 5.11, < 5.15.80 | ≥ 5.16, < 6.0.10 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4 | 6.1:rc5
Debian1 product
  • linux< 6.0.10-1

3 vendors · 116 products

References

12 links
Show all 12 references