Description
In the Linux kernel, the following vulnerability has been resolved: ext4: verify orphan file size is not too big In principle orphan file can be arbitrarily large. However orphan replay needs to traverse it all and we also pin all its buffers in memory. Thus filesystems with absurdly large orphan files can lead to big amounts of memory consumed. Limit orphan file size to a sane value and also use kvmalloc() for allocating array of block descriptor structures to avoid large order allocations for sane but large orphan files.
Product status
02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 (git) before 95a21611b14ae0a401720645245a8db16f040995
02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 (git) before 566a1d6084563bd07433025aa23bcea4427de107
02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 (git) before 304fc34ff6fc8261138fd81f119e024ac3a129e9
02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 (git) before a2d803fab8a6c6a874277cb80156dc114db91921
02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 (git) before 2b9da798ff0f4d026c5f0f815047393ebe7d8859
02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 (git) before 0a6ce20c156442a4ce2a404747bb0fb05d54eeb3
5.15
Any version before 5.15
5.15.195 (semver)
6.1.157 (semver)
6.6.113 (semver)
6.12.54 (semver)
6.17.4 (semver)
6.18 (original_commit_for_fix)
References
git.kernel.org/...c/95a21611b14ae0a401720645245a8db16f040995
git.kernel.org/...c/566a1d6084563bd07433025aa23bcea4427de107
git.kernel.org/...c/304fc34ff6fc8261138fd81f119e024ac3a129e9
git.kernel.org/...c/a2d803fab8a6c6a874277cb80156dc114db91921
git.kernel.org/...c/2b9da798ff0f4d026c5f0f815047393ebe7d8859
git.kernel.org/...c/0a6ce20c156442a4ce2a404747bb0fb05d54eeb3
