CVE-2022-49803
- Source
- https://cve.org/CVERecord?id=CVE-2022-49803
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49803.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49803
- Downstream
- Published
- 2025-05-01T14:09:30.971Z
- Modified
- 2026-04-02T08:27:56.693814Z
- Summary
- netdevsim: Fix memory leak of nsim_dev->fa_cookie
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
netdevsim: Fix memory leak of nsimdev->facookie
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>] nsimdevtrapfacookiewrite+0xc1/0x210 [netdevsim] [<0000000093d78e77>] fullproxywrite+0xf3/0x180 [<000000005a662c16>] vfswrite+0x1c5/0xaf0 [<000000007aabf84a>] ksyswrite+0xed/0x1c0 [<000000005f1d2e47>] dosyscall64+0x3b/0x90 [<000000006001c6ec>] entrySYSCALL64afterhwframe+0x63/0xcd
The issue occurs in the following scenarios:
nsimdevtrapfacookiewrite() kmalloc() facookie nsimdev->facookie = facookie .. nsimdrv_remove()
The facookie allocked in nsimdevtrapfacookiewrite() is not freed. To fix, add kfree(nsimdev->facookie) to nsimdrvremove().
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49803.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/064bc7312bd09a48798418663090be0c776183db
- https://git.kernel.org/stable/c/207edad5717e0a5709ce8467f0eff41c607835c9
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49803.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-49803
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git