Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix NULL dereference on root when tracing inode eviction When evicting an inode the first thing we do is to setup tracing for it, which implies fetching the root's id. But in btrfs_evict_inode() the root might be NULL, as implied in the next check that we do in btrfs_evict_inode(). Hence, we either should set the ->root_objectid to 0 in case the root is NULL, or we move tracing setup after checking that the root is not NULL. Setting the rootid to 0 at least gives us the possibility to trace this call even in the case when the root is NULL, so that's the solution taken here.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1abe9b8a138c9988ba8f7bfded6453649a31541f to < 99181ddb124cfe2b09f5e924c308222d2339e82aaffected1abe9b8a138c9988ba8f7bfded6453649a31541f to < 64d8abd8c5305795a2b35fc96039d99d34f5e762affected1abe9b8a138c9988ba8f7bfded6453649a31541f to < 582ba48e4a4c06fef6bdcf4e57b7b9af660bbd0caffected1abe9b8a138c9988ba8f7bfded6453649a31541f to < 99e057f3d3ef24b99a7b1d84e01dd1bd890098daaffected1abe9b8a138c9988ba8f7bfded6453649a31541f to < f157dd661339fc6f5f2b574fe2429c43bd309534affected
Linux Linux
Default version status: affected
2.6.39affected0 to < 2.6.39unaffected6.1.191 to ≤ 6.1.*unaffected6.6.130 to ≤ 6.6.*unaffected6.12.66 to ≤ 6.12.*unaffected6.18.6 to ≤ 6.18.*unaffected6.19 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/99181ddb124cfe2b09f5e924c308222d2339e82a ↗
- https://git.kernel.org/stable/c/64d8abd8c5305795a2b35fc96039d99d34f5e762 ↗
- https://git.kernel.org/stable/c/582ba48e4a4c06fef6bdcf4e57b7b9af660bbd0c ↗
- https://git.kernel.org/stable/c/99e057f3d3ef24b99a7b1d84e01dd1bd890098da ↗
- https://git.kernel.org/stable/c/f157dd661339fc6f5f2b574fe2429c43bd309534 ↗