cbcvebase.
CVE-2024-50265
published 2024-11-19

CVE-2024-50265: In the Linux kernel, the following vulnerability has been resolved: ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove() Syzkaller is…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.31%
23.2th percentile
In the Linux kernel, the following vulnerability has been resolved: ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove() Syzkaller is able to provoke null-ptr-dereference in ocfs2_xa_remove(): [ 57.319872] (a.out,1161,7):ocfs2_xa_remove:2028 ERROR: status = -12 [ 57.320420] (a.out,1161,7):ocfs2_xa_cleanup_value_truncate:1999 ERROR: Partial truncate while removing xattr overlay.upper. Leaking 1 clusters and removing the entry [ 57.321727] BUG: kernel NULL pointer dereference, address: 0000000000000004 [...] [ 57.325727] RIP: 0010:ocfs2_xa_block_wipe_namevalue+0x2a/0xc0 [...] [ 57.331328] Call Trace: [ 57.331477] [...] [ 57.333511] ? do_user_addr_fault+0x3e5/0x740 [ 57.333778] ? exc_page_fault+0x70/0x170 [ 57.334016] ? asm_exc_page_fault+0x2b/0x30 [ 57.334263] ? __pfx_ocfs2_xa_block_wipe_namevalue+0x10/0x10 [ 57.334596] ? ocfs2_xa_block_wipe_namevalue+0x2a/0xc0 [ 57.334913] ocfs2_xa_remove_entry+0x23/0xc0 [ 57.335164] ocfs2_xa_set+0x704/0xcf0 [ 57.335381] ? _raw_spin_unlock+0x1a/0x40 [ 57.335620] ? ocfs2_inode_cache_unlock+0x16/0x20 [ 57.335915] ? trace_preempt_on+0x1e/0x70 [ 57.336153] ? start_this_handle+0x16c/0x500 [ 57.336410] ? preempt_count_sub+0x50/0x80 [ 57.336656] ? _raw_read_unlock+0x20/0x40 [ 57.336906] ? start_this_handle+0x16c/0x500 [ 57.337162] ocfs2_xattr_block_set+0xa6/0x1e0 [ 57.337424] __ocfs2_xattr_set_handle+0x1fd/0x5d0 [ 57.337706] ? ocfs2_start_trans+0x13d/0x290 [ 57.337971] ocfs2_xattr_set+0xb13/0xfb0 [ 57.338207] ? dput+0x46/0x1c0 [ 57.338393] ocfs2_xattr_trusted_set+0x28/0x30 [ 57.338665] ? ocfs2_xattr_trusted_set+0x28/0x30 [ 57.338948] __vfs_removexattr+0x92/0xc0 [ 57.339182] __vfs_removexattr_locked+0xd5/0x190 [ 57.339456] ? preempt_count_sub+0x50/0x80 [ 57.339705] vfs_removexattr+0x5f/0x100 [...] Reproducer uses faultinject facility to fail ocfs2_xa_remove() -> ocfs2_xa_value_truncate() with -ENOMEM. In this case the comment mentions that we can return 0 if ocfs2_xa_cleanup_value_truncate() is going to wipe the

Affected

35 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.119-1 (bookworm)linux 6.1.119-1 (bookworm)
debianlinux-6.1< linux 6.1.119-1 (bookworm)linux 6.1.119-1 (bookworm)
linuxlinux
linuxlinux>= 399ff3a748cf4c8c853e96dd477153202636527b < 38cbf13b2e7a31362babe411f7c2c3c52cd2734b38cbf13b2e7a31362babe411f7c2c3c52cd2734b
linuxlinux>= 399ff3a748cf4c8c853e96dd477153202636527b < 168a9b8303fcb0317db4c06b23ce1c0ce2af4e10168a9b8303fcb0317db4c06b23ce1c0ce2af4e10
linuxlinux>= 399ff3a748cf4c8c853e96dd477153202636527b < 6a7e6dcf90fe7721d0863067b6ca9a94421346926a7e6dcf90fe7721d0863067b6ca9a9442134692
linuxlinux>= 399ff3a748cf4c8c853e96dd477153202636527b < dcc8fe8c83145041cb6c80cac21f6173a3ff0204dcc8fe8c83145041cb6c80cac21f6173a3ff0204
linuxlinux>= 399ff3a748cf4c8c853e96dd477153202636527b < 86dd0e8d42828923c68ad506933336bcd6f2317d86dd0e8d42828923c68ad506933336bcd6f2317d
linuxlinux>= 399ff3a748cf4c8c853e96dd477153202636527b < dd73c942eed76a014c7a5597e6926435274d2c4cdd73c942eed76a014c7a5597e6926435274d2c4c
linuxlinux>= 399ff3a748cf4c8c853e96dd477153202636527b < 2b5369528ee63c88371816178a05b5e664c873862b5369528ee63c88371816178a05b5e664c87386
linuxlinux>= 399ff3a748cf4c8c853e96dd477153202636527b < 0b63c0e01fba40e3992bc627272ec7b618ccaef70b63c0e01fba40e3992bc627272ec7b618ccaef7
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.234-15.10.234-1
linuxlinux_kernel>= 0 < 6.1.119-16.1.119-1
linuxlinux_kernel>= 0 < 6.11.9-16.11.9-1
linuxlinux_kernel>= 0 < 6.11.9-16.11.9-1
linuxlinux_kernel>= 0 < 5.4.0-208.2285.4.0-208.228
linuxlinux_kernel>= 0 < 5.15.0-133.1445.15.0-133.144
linuxlinux_kernel>= 0 < 6.8.0-58.606.8.0-58.60
linuxlinux_kernel>= 0 < 6.11.0-18.186.11.0-18.18
linuxlinux_kernel>= 0 < 4.4.0-267.3014.4.0-267.301
linuxlinux_kernel>= 0 < 4.15.0-236.2484.15.0-236.248
linuxlinux_kernel>= 2.6.34 < 4.19.3244.19.324
linuxlinux_kernel>= 4.20 < 5.4.2865.4.286
linuxlinux_kernel>= 5.11 < 5.15.1725.15.172

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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