CVE-2022-48674
- Source
- https://cve.org/CVERecord?id=CVE-2022-48674
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48674.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-48674
- Downstream
DEBIAN (1)
ROOT (1)
- Related
- Published
- 2024-05-03T14:51:57Z
- Modified
- 2026-10-08T02:47:36Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- erofs: fix pcluster use-after-free on UP platforms
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
erofs: fix pcluster use-after-free on UP platforms
During stress testing with CONFIG_SMP disabled, KASAN reports as below:
================================================================== BUG: KASAN: use-after-free in __mutex_lock+0xe5/0xc30 Read of size 8 at addr ffff8881094223f8 by task stress/7789
CPU: 0 PID: 7789 Comm: stress Not tainted 6.0.0-rc1-00002-g0d53d2e882f9 #3 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 Call Trace: .. __mutex_lock+0xe5/0xc30 .. z_erofs_do_read_page+0x8ce/0x1560 .. z_erofs_readahead+0x31c/0x580 .. Freed by task 7787 kasan_save_stack+0x1e/0x40 kasan_set_track+0x20/0x30 kasan_set_free_info+0x20/0x40 __kasan_slab_free+0x10c/0x190 kmem_cache_free+0xed/0x380 rcu_core+0x3d5/0xc90 __do_softirq+0x12d/0x389
Last potentially related work creation: kasan_save_stack+0x1e/0x40 __kasan_record_aux_stack+0x97/0xb0 call_rcu+0x3d/0x3f0 erofs_shrink_workstation+0x11f/0x210 erofs_shrink_scan+0xdc/0x170 shrink_slab.constprop.0+0x296/0x530 drop_slab+0x1c/0x70 drop_caches_sysctl_handler+0x70/0x80 proc_sys_call_handler+0x20a/0x2f0 vfs_write+0x555/0x6c0 ksys_write+0xbe/0x160 do_syscall_64+0x3b/0x90
The root cause is that erofs_workgroup_unfreeze() doesn't reset to orig_val thus it causes a race that the pcluster reuses unexpectedly before freeing.
Since UP platforms are quite rare now, such path becomes unnecessary. Let's drop such specific-designed path directly instead.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48674.json" }- References
-
- https://git.kernel.org/stable/c/2f44013e39984c127c6efedf70e6b5f4e9dcf315
- https://git.kernel.org/stable/c/8ddd001cef5e82d19192e6861068463ecca5f556
- https://git.kernel.org/stable/c/94c34faaafe7b55adc2d8d881db195b646959b9e
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48674.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-48674
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced73f5c66df3e26ab750cefcb9a3e08c71c9f79cadFixed8ddd001cef5e82d19192e6861068463ecca5f556Fixed94c34faaafe7b55adc2d8d881db195b646959b9eFixed2f44013e39984c127c6efedf70e6b5f4e9dcf315
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4.19.26Fixed4.20
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4.20.13Fixed4.21
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced08ec9e6892cc792d7f8fe4d13bd8a0e91fb23488
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced78c46113413bea1cc345757112aa2642e0f66de5