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-2022-49803 First vendor Publication 2025-05-01
Vendor Cve Last vendor Modification 2025-05-01

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:

netdevsim: Fix memory leak of nsim_dev->fa_cookie

kmemleak reports this issue:

unreferenced object 0xffff8881bac872d0 (size 8):
comm "sh", pid 58603, jiffies 4481524462 (age 68.065s)
hex dump (first 8 bytes):
04 00 00 00 de ad be ef ........
backtrace:
[<00000000c80b8577>] __kmalloc+0x49/0x150
[<000000005292b8c6>] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim]
[<0000000093d78e77>] full_proxy_write+0xf3/0x180
[<000000005a662c16>] vfs_write+0x1c5/0xaf0
[<000000007aabf84a>] ksys_write+0xed/0x1c0
[<000000005f1d2e47>] do_syscall_64+0x3b/0x90
[<000000006001c6ec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

The issue occurs in the following scenarios:

nsim_dev_trap_fa_cookie_write()
kmalloc() fa_cookie
nsim_dev->fa_cookie = fa_cookie .. nsim_drv_remove()

The fa_cookie allocked in nsim_dev_trap_fa_cookie_write() is not freed. To fix, add kfree(nsim_dev->fa_cookie) to nsim_drv_remove().

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-49803

Sources (Detail)

https://git.kernel.org/stable/c/064bc7312bd09a48798418663090be0c776183db
https://git.kernel.org/stable/c/207edad5717e0a5709ce8467f0eff41c607835c9
Source Url

Alert History

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0
Date Informations
2025-05-27 02:12:02
  • First insertion