ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()
The commit c8e008b60492 ("ext4: ignore xattrs past end")
introduced a refcount leak in when block_csum is false.
ext4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to
get iloc.bh, but never releases it with brelse().
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920https://git.kernel.org/stable/c/153ab2c52355fbebcae622db8e7b506492c73a29https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cfhttps://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708fhttps://git.kernel.org/stable/c/b706d00206a9e82362a9633efbd8b5775650169bhttps://git.kernel.org/stable/c/dd98a5603a212ea9c96c6982ccdbcc748fdb9a56https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298