CVE-2022-49803

NameCVE-2022-49803
DescriptionIn 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().
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)bullseye5.10.223-1vulnerable
bullseye (security)5.10.234-1vulnerable
bookworm6.1.129-1fixed
bookworm (security)6.1.135-1fixed
trixie6.12.22-1fixed
sid6.12.25-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)6.0.10-1

Notes

https://git.kernel.org/linus/064bc7312bd09a48798418663090be0c776183db (6.1-rc6)

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