Executive Summary



This vulnerability is currently undergoing analysis and not all information is available. Please check back soon to view the completed vulnerability summary
Informations
Name CVE-2022-49256 First vendor Publication 2025-02-26
Vendor Cve Last vendor Modification 2025-02-26

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

In the Linux kernel, the following vulnerability has been resolved:

watch_queue: Actually free the watch

free_watch() does everything barring actually freeing the watch object. Fix this by adding the missing kfree.

kmemleak produces a report something like the following. Note that as an address can be seen in the first word, the watch would appear to have gone through call_rcu().

BUG: memory leak unreferenced object 0xffff88810ce4a200 (size 96):
comm "syz-executor352", pid 3605, jiffies 4294947473 (age 13.720s)
hex dump (first 32 bytes):
e0 82 48 0d 81 88 ff ff 00 00 00 00 00 00 00 00 ..H.............
80 a2 e4 0c 81 88 ff ff 00 00 00 00 00 00 00 00 ................
backtrace:
[] kmalloc include/linux/slab.h:581 [inline]
[] kzalloc include/linux/slab.h:714 [inline]
[] keyctl_watch_key+0xec/0x2e0 security/keys/keyctl.c:1800
[] __do_sys_keyctl+0x3c4/0x490 security/keys/keyctl.c:2016
[] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
[] entry_SYSCALL_64_after_hwframe+0x44/0xae

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-49256

Sources (Detail)

https://git.kernel.org/stable/c/31824613a42aacdcbeb325bf07a1c8247a11ebe2
https://git.kernel.org/stable/c/3d8dcf278b1ee1eff1e90be848fa2237db4c07a7
https://git.kernel.org/stable/c/7e8c9b0df07a77f0d072603b8ced2677e30e1893
https://git.kernel.org/stable/c/9d92be1a09fbb3dd65600dbfe7eedb40e7228e4b
https://git.kernel.org/stable/c/f69aecb49968e14196366bbe896eab0a904229f5
Source Url

Alert History

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0
Date Informations
2025-02-26 17:20:33
  • First insertion