CVE-2025-38659

Summary

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

gfs2: No more self recovery

When a node withdraws and it turns out that it is the only node that has the filesystem mounted, gfs2 currently tries to replay the local journal to bring the filesystem back into a consistent state. Not only is that a very bad idea, it has also never worked because gfs2_recover_func() will refuse to do anything during a withdraw.

However, before even getting to this point, gfs2_recover_func() dereferences sdp->sd_jdesc->jd_inode. This was a use-after-free before commit 04133b607a78 ("gfs2: Prevent double iput for journal on error") and is a NULL pointer dereference since then.

Simply get rid of self recovery to fix that.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux601ef0d52e9617588fcff3df26953592f2eb44ac < 69cf5699a402ee7ae1be53954dc2ae652c0a053caffected
LinuxLinux601ef0d52e9617588fcff3df26953592f2eb44ac < 6ebe17b359bead383581f729e43f591c1c36e159affected
LinuxLinux601ef0d52e9617588fcff3df26953592f2eb44ac < 1a91ba12abef628b43cada87478328274d988e88affected
LinuxLinux601ef0d52e9617588fcff3df26953592f2eb44ac < f5426ffbec971a8f7346a57392d3a901bdee5a9baffected
LinuxLinux601ef0d52e9617588fcff3df26953592f2eb44ac < 6784367b2f3cd7b89103de35764f37f152590dbdaffected
LinuxLinux601ef0d52e9617588fcff3df26953592f2eb44ac < 97c94c7dbddc34d353c83b541b3decabf98d04afaffected
LinuxLinux601ef0d52e9617588fcff3df26953592f2eb44ac < deb016c1669002e48c431d6fd32ea1c20ef41756affected
LinuxLinux5.7affected
LinuxLinux0 < 5.7unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.167 <= 6.1.*unaffected
LinuxLinux6.6.102 <= 6.6.*unaffected
LinuxLinux6.12.42 <= 6.12.*unaffected
LinuxLinux6.15.10 <= 6.15.*unaffected
LinuxLinux6.16.1 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

References