In the Linux kernel, the following vulnerability has been resolved:
jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted
Following process will fail assertion 'jh->b_frozen_data == NULL' in jbd2_journal_dirty_metadata():
jbd2_journal_commit_transaction unlink(dir/a) jh->b_transaction = trans1 jh->b_jlist = BJ_Metadata journal->j_running_transaction = NULL trans1->t_state = T_COMMIT unlink(dir/b) handle->h_trans = trans2 do_get_write_access jh->b_modified = 0 jh->b_frozen_data = frozen_buffer jh->b_next_transaction = trans2 jbd2_journal_dirty_metadata is_handle_aborted is_journal_aborted // return false
--> jbd2 abort <--
while (commit_transaction->t_buffers) if (is_journal_aborted) jbd2_journal_refile_buffer __jbd2_journal_refile_buffer WRITE_ONCE(jh->b_transaction, jh->b_next_transaction) WRITE_ONCE(jh->b_next_transaction, NULL) __jbd2_journal_file_buffer(jh, BJ_Reserved) J_ASSERT_JH(jh, jh->b_frozen_data == NULL) // assertion failure !
The reproducer (See detail in [Link]) reports: ------------[ cut here ]------------ kernel BUG at fs/jbd2/transaction.c:1629! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 2 PID: 584 Comm: unlink Tainted: G W 5.19.0-rc6-00115-g4a57a8400075-dirty #697 RIP: 0010:jbd2_journal_dirty_metadata+0x3c5/0x470 RSP: 0018:ffffc90000be7ce0 EFLAGS: 00010202 Call Trace: <TASK> __ext4_handle_dirty_metadata+0xa0/0x290 ext4_handle_dirty_dirblock+0x10c/0x1d0 ext4_delete_entry+0x104/0x200 __ext4_unlink+0x22b/0x360 ext4_unlink+0x275/0x390 vfs_unlink+0x20b/0x4c0 do_unlinkat+0x42f/0x4c0 __x64_sys_unlink+0x37/0x50 do_syscall_64+0x35/0x80
After journal aborting, __jbd2_journal_refile_buffer() is executed with holding @jh->b_state_lock, we can fix it by moving 'is_handle_aborted()' into the area protected by @jh->b_state_lock.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-develUpgrade kernel-livepatch-5.10.144-127.601Upgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade kernel-tools-develUpgrade kernel-headersUpgrade bpftool-debuginfoUpgrade kernel-debuginfoUpgrade kernel-toolsUpgrade kernel-livepatch-5.15.69-37.134Upgrade python-perfUpgrade perf-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-livepatch-4.14.291-218.527Upgrade kernel-debuginfo-common-x86_64 | Jul 9, 2025 | Jun 18, 2025 |
| Debian | — | Upgrade linux | Jun 20, 2025 | Jun 20, 2025 |
| Dell Powerstore Dsa2025429 | — | Upgrade Dell PowerStoreOS to the latest version | Dec 3, 2025 | Dec 2, 2025 |
| Dell Powerstore Dsa2026039 | — | Upgrade Dell PowerStoreOS to the latest version | Jan 13, 2026 | Jan 6, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernelUpgrade python3-perf | Oct 24, 2025 | Oct 23, 2025 |
| Redhat_linux | — | Upgrade kernelNo solution exists | Jul 9, 2025 | Jun 18, 2025 |
| Ubuntu | — | Upgrade linux-aws-hweUpgrade linux-azure-4.15Upgrade linuxUpgrade linux-oracle-5.15Upgrade linux-azure-5.4Upgrade linux-aws-fipsUpgrade linux-nvidiaUpgrade linux-ibmUpgrade linux-azure-5.15Upgrade linux-gcp-5.4Upgrade linux-hweUpgrade linux-ibm-5.4Upgrade linux-lowlatencyUpgrade linux-azure-fipsUpgrade linux-iotUpgrade linux-gcp-4.15Upgrade linux-gkeopUpgrade linux-gcp-fipsUpgrade linux-hwe-5.4Upgrade linux-oracleUpgrade linux-intel-iotg-5.15Upgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-realtimeUpgrade linux-awsUpgrade linux-gcpUpgrade linux-fipsUpgrade linux-gcp-5.15Upgrade linux-aws-5.15Upgrade linux-kvmUpgrade linux-raspiUpgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-intel-iotgUpgrade linux-riscv-5.15Upgrade linux-raspi-5.4Upgrade linux-aws-5.4Upgrade linux-gkeUpgrade linux-oracle-5.4 | Jun 26, 2025 | Jun 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jun 18, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub