jbd2: check 'jh->b_transaction' before removing it from checkpoint
In the Linux kernel, the following vulnerability has been resolved: jbd2: check 'jh->b_transaction' before removing it from checkpoint Following process will corrupt ext4 image: Step 1: jbd2_journal_commit_transaction __jbd2_journal_insert_checkpoint(jh, commit_transaction) // Put jh into trans1->t_checkpoint_list journal->j_checkpoint_transactions = commit_transaction // Put trans1 into journal->j_checkpoint_transactions Step 2: do_get_write_access test_clear_buffer_dirty(bh) // clear buffer dirty，set jbd dirty __jbd2_journal_file_buffer(jh, transaction) // jh belongs to trans2 Step 3: drop_cache journal_shrink_one_cp_list jbd2_journal_try_remove_checkpoint if (!trylock_buffer(bh)) // lock bh, true if (buffer_dirty(bh)) // buffer is not dirty __jbd2_journal_remove_checkpoint(jh) // remove jh from trans1->t_checkpoint_list Step 4: jbd2_log_do_checkpoint trans1 = journal->j_checkpoint_transactions // jh is not in trans1->t_checkpoint_list jbd2_cleanup_journal_tail(journal) // trans1 is done Step 5: Power cut, trans2 is not committed, jh is lost in next mounting. Fix it by checking 'jh->b_transaction' before remove it from checkpoint.
CVE-2023-53526
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2023-53526
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "b832174b7f89df3ebab02f5b485d00127a0e1a6e",
"lessThan": "ef5fea70e5915afd64182d155e72bfb4f275e1fc",
"versionType": "git"
},
{
"status": "affected",
"version": "e5c768d809a85e9efd0274b2efe69d4970cc0014",
"lessThan": "dbafe636db415299e54d9dfefc1003bda9e71c9d",
"versionType": "git"
},
{
"status": "affected",
"version": "46f881b5b1758dc4a35fba4a643c10717d0cf427",
"lessThan": "2298f2589903a8bc03061b54b31fd97985ab6529",
"versionType": "git"
},
{
"status": "affected",
"version": "46f881b5b1758dc4a35fba4a643c10717d0cf427",
"lessThan": "590a809ff743e7bd890ba5fb36bc38e20a36de53",
"versionType": "git"
},
{
"status": "affected",
"version": "019b59aeb2af6b47d5c8e69c5dc1d731c8df0354",
"versionType": "git"
},
{
"status": "affected",
"version": "5.15.129",
"lessThan": "5.15.132",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.50",
"lessThan": "6.1.54",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.4.13",
"lessThan": "6.5",
"versionType": "semver"
}
],
"programFiles": [
"fs/jbd2/checkpoint.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.132",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.54",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.5.4",
"versionType": "semver",
"lessThanOrEqual": "6.5.*"
},
{
"status": "unaffected",
"version": "6.6",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/jbd2/checkpoint.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2023-53526
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30285 · Revision 1
- Added to Heist Feed
- Publisher date