| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove()\n\nSyzkaller is able to provoke null-ptr-dereference in ocfs2_xa_remove():\n\n[ 57.319872] (a.out,1161,7):ocfs2_xa_remove:2028 ERROR: status = -12\n[ 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\n[ 57.321727] BUG: kernel NULL pointer dereference, address: 0000000000000004\n[...]\n[ 57.325727] RIP: 0010:ocfs2_xa_block_wipe_namevalue+0x2a/0xc0\n[...]\n[ 57.331328] Call Trace:\n[ 57.331477] <TASK>\n[...]\n[ 57.333511] ? do_user_addr_fault+0x3e5/0x740\n[ 57.333778] ? exc_page_fault+0x70/0x170\n[ 57.334016] ? asm_exc_page_fault+0x2b/0x30\n[ 57.334263] ? __pfx_ocfs2_xa_block_wipe_namevalue+0x10/0x10\n[ 57.334596] ? ocfs2_xa_block_wipe_namevalue+0x2a/0xc0\n[ 57.334913] ocfs2_xa_remove_entry+0x23/0xc0\n[ 57.335164] ocfs2_xa_set+0x704/0xcf0\n[ 57.335381] ? _raw_spin_unlock+0x1a/0x40\n[ 57.335620] ? ocfs2_inode_cache_unlock+0x16/0x20\n[ 57.335915] ? trace_preempt_on+0x1e/0x70\n[ 57.336153] ? start_this_handle+0x16c/0x500\n[ 57.336410] ? preempt_count_sub+0x50/0x80\n[ 57.336656] ? _raw_read_unlock+0x20/0x40\n[ 57.336906] ? start_this_handle+0x16c/0x500\n[ 57.337162] ocfs2_xattr_block_set+0xa6/0x1e0\n[ 57.337424] __ocfs2_xattr_set_handle+0x1fd/0x5d0\n[ 57.337706] ? ocfs2_start_trans+0x13d/0x290\n[ 57.337971] ocfs2_xattr_set+0xb13/0xfb0\n[ 57.338207] ? dput+0x46/0x1c0\n[ 57.338393] ocfs2_xattr_trusted_set+0x28/0x30\n[ 57.338665] ? ocfs2_xattr_trusted_set+0x28/0x30\n[ 57.338948] __vfs_removexattr+0x92/0xc0\n[ 57.339182] __vfs_removexattr_locked+0xd5/0x190\n[ 57.339456] ? preempt_count_sub+0x50/0x80\n[ 57.339705] vfs_removexattr+0x5f/0x100\n[...]\n\nReproducer uses faultinject facility to fail ocfs2_xa_remove() ->\nocfs2_xa_value_truncate() with -ENOMEM.\n\nIn this case the comment mentions that we can return 0 if\nocfs2_xa_cleanup_value_truncate() is going to wipe the entry\nanyway. But the following 'rc' check is wrong and execution flow do\n'ocfs2_xa_remove_entry(loc);' twice:\n* 1st: in ocfs2_xa_cleanup_value_truncate();\n* 2nd: returning back to ocfs2_xa_remove() instead of going to 'out'.\n\nFix this by skipping the 2nd removal of the same entry and making\nsyzkaller repro happy." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/ocfs2/xattr.c" |
| ], |
| "versions": [ |
| { |
| "version": "399ff3a748cf4c8c853e96dd477153202636527b", |
| "lessThan": "38cbf13b2e7a31362babe411f7c2c3c52cd2734b", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "399ff3a748cf4c8c853e96dd477153202636527b", |
| "lessThan": "168a9b8303fcb0317db4c06b23ce1c0ce2af4e10", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "399ff3a748cf4c8c853e96dd477153202636527b", |
| "lessThan": "6a7e6dcf90fe7721d0863067b6ca9a9442134692", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "399ff3a748cf4c8c853e96dd477153202636527b", |
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| "status": "affected", |
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| "status": "affected", |
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| "lessThan": "dd73c942eed76a014c7a5597e6926435274d2c4c", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "399ff3a748cf4c8c853e96dd477153202636527b", |
| "lessThan": "2b5369528ee63c88371816178a05b5e664c87386", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "399ff3a748cf4c8c853e96dd477153202636527b", |
| "lessThan": "0b63c0e01fba40e3992bc627272ec7b618ccaef7", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/ocfs2/xattr.c" |
| ], |
| "versions": [ |
| { |
| "version": "2.6.34", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "2.6.34", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.324", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.286", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.230", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.172", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.117", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.61", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.11.8", |
| "lessThanOrEqual": "6.11.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.34", |
| "versionEndExcluding": "4.19.324" |
| }, |
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| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
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| "versionEndExcluding": "5.4.286" |
| }, |
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| }, |
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| } |
| ] |
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| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/38cbf13b2e7a31362babe411f7c2c3c52cd2734b" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/168a9b8303fcb0317db4c06b23ce1c0ce2af4e10" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/6a7e6dcf90fe7721d0863067b6ca9a9442134692" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/dcc8fe8c83145041cb6c80cac21f6173a3ff0204" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/86dd0e8d42828923c68ad506933336bcd6f2317d" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/dd73c942eed76a014c7a5597e6926435274d2c4c" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/2b5369528ee63c88371816178a05b5e664c87386" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/0b63c0e01fba40e3992bc627272ec7b618ccaef7" |
| } |
| ], |
| "title": "ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-50265", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
