🛡️ CVE-2023-52604 on Ubuntu — linux
Description
In the Linux kernel, the following vulnerability has been resolved: FS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree Syzkaller reported the following issue: UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2867:6 index 196694 is out of range for type 's8[1365]' (aka 'signed char[1365]') CPU: 1 PID: 109 Comm: jfsCommit Not tainted 6.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0x11c/0x150 lib/ubsan.c:348 dbAdjTree+0x474/0x4f0 fs/jfs/jfs_dmap.c:2867 dbJoin+0x210/0x2d0 fs/jfs/jfs_dmap.c:2834 dbFreeBits+0x4eb/0xda0 fs/jfs/jfs_dmap.c:2331 dbFreeDmap fs/jfs/jfs_dmap.c:2080 [inline] dbFree+0x343/0x650 fs/jfs/jfs_dmap.c:402 txFreeMap+0x798/0xd50 fs/jfs/jfs_txnmgr.c:2534 txUpdateMap+0x342/0x9e0 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x47a/0xb70 fs/jfs/jfs_txnmgr.c:2732 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 </TASK> ================================================================================ Kernel panic - not syncing: UBSAN: panic_on_warn set ... CPU: 1 PID: 109 Comm: jfsCommit Not tainted 6.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 panic+0x30f/0x770 kernel/panic.c:340 check_panic_on_warn+0x82/0xa0 kernel/panic.c:236 ubsan_epilogue lib/ubsan.c:223 [inline] __ubsan_handle_out_of_bounds+0x13c/0x150 lib/ubsan.c:348 dbAdjTree+0x474/0x4f0 fs/jfs/jfs_dmap.c:2867 dbJoin+0x210/0x2d0 fs/jfs/jfs_dmap.c:2834 dbFreeBits+0x4eb/0xda0 fs/jfs/jfs_dmap.c:2331 dbFreeDmap fs/jfs/jfs_dmap.c:2080 [inline] dbFree+0x343/0x650 fs/jfs/jfs_dmap.c:402 txFreeMap+0x798/0xd50 fs/jfs/jfs_txnmgr.c:2534 txUpdateMap+0x342/0x9e0 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x47a/0xb70 fs/jfs/jfs_txnmgr.c:2732 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 </TASK> Kernel Offset: disabled Rebooting in 86400 seconds.. The issue is caused when the value of lp becomes greater than CTLTREESIZE which is the max size of stree. Adding a simple check solves this issue. Dave: As the function returns a void, good error handling would require a more intrusive code reorganization, so I modified Osama's patch at use WARN_ON_ONCE for lack of a cleaner option. The patch is tested via syzbot.
Distribution advisory
This page covers CVE-2023-52604 as tracked by Ubuntu, for the package linux. The fix is available in version 5.15.0-106.116; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Local — a local account, shell or session on the host is needed.
- Attack complexity: Low — the attack works reliably, with no preparation.
- Privileges required: Low — an ordinary user account is enough.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: High — total loss, or loss the attacker controls.
- Integrity impact: High — total loss, or loss the attacker controls.
- Availability impact: High — total loss, or loss the attacker controls.
Affected software
UBUNTU-CVE-2023-52604 is recorded against 117 packages.
- linux (fixed in 5.15.0-106.116)
- linux-allwinner-5.19
- linux-aws (fixed in 5.15.0-1061.67)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13
- linux-aws-5.15 (fixed in 5.15.0-1061.67~20.04.1)
- linux-aws-5.19
- linux-aws-5.3
- linux-aws-5.4 (fixed in 5.4.0-1124.134~18.04.1)
- linux-aws-5.8
- linux-aws-6.2
- linux-aws-6.5 (fixed in 6.5.0-1020.20~22.04.1)
- linux-aws-fips (fixed in 5.15.0-1061.67+fips1)
- linux-aws-hwe (fixed in 4.15.0-1168.181~16.04.1)
- linux-azure (fixed in 5.15.0-1063.72)
- linux-azure-4.15 (fixed in 4.15.0-1177.192)
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.15 (fixed in 5.15.0-1063.72~20.04.1)
- linux-azure-5.19
- linux-azure-5.3
- linux-azure-5.4 (fixed in 5.4.0-1129.136~18.04.1)
- linux-azure-5.8
Show the remaining 93 packages
- linux-azure-6.2
- linux-azure-6.5 (fixed in 6.5.0-1021.22~22.04.1)
- linux-azure-edge
- linux-azure-fde
- linux-azure-fde-5.19
- linux-azure-fde-6.2
- linux-azure-fde-6.8
- linux-azure-fips (fixed in 5.15.0-1063.72+fips1)
- linux-bluefield
- linux-fips (fixed in 5.15.0-106.116+fips1)
- linux-gcp (fixed in 5.15.0-1059.67)
- linux-gcp-4.15 (fixed in 4.15.0-1162.179)
- linux-gcp-5.11
- linux-gcp-5.13
- linux-gcp-5.15 (fixed in 5.15.0-1059.67~20.04.1)
- linux-gcp-5.19
- linux-gcp-5.3
- linux-gcp-5.4 (fixed in 5.4.0-1128.137~18.04.1)
- linux-gcp-5.8
- linux-gcp-6.2
- linux-gcp-6.5 (fixed in 6.5.0-1020.20~22.04.1)
- linux-gcp-fips (fixed in 5.15.0-1059.67+fips1)
- linux-gke (fixed in 5.15.0-1058.63)
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- linux-gkeop (fixed in 5.15.0-1044.51)
- linux-gkeop-5.15 (fixed in 5.15.0-1044.51~20.04.1)
- linux-gkeop-5.4
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13
- linux-hwe-5.15 (fixed in 5.15.0-106.116~20.04.1)
- linux-hwe-5.19
- linux-hwe-5.4 (fixed in 5.4.0-181.201~18.04.1)
- linux-hwe-5.8
- linux-hwe-6.2
- linux-hwe-6.5 (fixed in 6.5.0-35.35~22.04.1)
- linux-hwe-edge
- linux-ibm (fixed in 5.15.0-1054.57)
- linux-ibm-5.15 (fixed in 5.15.0-1054.57~20.04.1)
- linux-ibm-5.4 (fixed in 5.4.0-1071.76~18.04.1)
- linux-intel-5.13
- linux-intel-iot-realtime (fixed in 5.15.0-1054.56)
- linux-intel-iotg (fixed in 5.15.0-1057.63)
- linux-intel-iotg-5.15 (fixed in 5.15.0-1058.64~20.04.1)
- linux-iot (fixed in 5.4.0-1036.37)
- linux-kvm (fixed in 5.15.0-1058.63)
- linux-lowlatency (fixed in 5.15.0-106.116)
- linux-lowlatency-hwe-5.15 (fixed in 5.15.0-106.116~20.04.1)
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.2
- linux-lowlatency-hwe-6.5 (fixed in 6.5.0-35.35.1~22.04.1)
- linux-lts-xenial (fixed in 4.4.0-254.288~14.04.1)
- linux-nvidia (fixed in 5.15.0-1054.55)
- linux-nvidia-6.2
- linux-nvidia-6.5 (fixed in 6.5.0-1019.19)
- linux-nvidia-tegra (fixed in 5.15.0-1026.26)
- linux-nvidia-tegra-5.15 (fixed in 5.15.0-1027.27~20.04.1)
- linux-nvidia-tegra-igx (fixed in 5.15.0-1015.15)
- linux-oem
- linux-oem-5.10
- linux-oem-5.13
- linux-oem-5.14
- linux-oem-5.17
- linux-oem-5.6
- linux-oem-6.0
- linux-oem-6.1 (fixed in 6.1.0-1035.35)
- linux-oem-6.5 (fixed in 6.5.0-1023.24)
- linux-oracle (fixed in 5.15.0-1059.65)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.15 (fixed in 5.15.0-1059.65~20.04.1)
- linux-oracle-5.3
- linux-oracle-5.4 (fixed in 5.4.0-1123.132~18.04.1)
- linux-oracle-5.8
- linux-oracle-6.5 (fixed in 6.5.0-1023.23~22.04.1)
- linux-raspi (fixed in 5.15.0-1054.57)
- linux-raspi-5.4 (fixed in 5.4.0-1108.120~18.04.1)
- linux-raspi-realtime (fixed in 6.8.0-2001.1)
- linux-raspi2
- linux-realtime (fixed in 5.15.0-1062.70)
- linux-riscv
- linux-riscv-5.11
- linux-riscv-5.15 (fixed in 5.15.0-1057.61~20.04.1)
- linux-riscv-5.19
- linux-riscv-5.8
- linux-riscv-6.5 (fixed in 6.5.0-35.35.1~22.04.1)
- linux-starfive-5.19
- linux-starfive-6.2
- linux-starfive-6.5 (fixed in 6.5.0-1014.15~22.04.1)
- linux-xilinx-zynqmp (fixed in 5.15.0-1030.34)
Timeline and source
Published on 6 March 2024 and last revised on 18 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
www.cve.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
Other advisories for this package
linux has other advisories on record. If you are patching this one, these are worth checking on the same host:
- DEBIAN-CVE-2022-4994 (published 30 Jul 2026)
- CVE-2026-21996 (3.3 Low, published 1 May 2026)
- CVE-2026-35233 (4.4 Medium, published 1 May 2026)
- CVE-2026-21991 (5.5 Medium, published 16 Mar 2026)
- CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
- CGA-w6xv-3fg4-grm5 (published 29 Jan 2026)
- CGA-6749-c84f-cv6j (published 7 Jan 2026)
- CGA-gqvj-m2xp-q99r (published 7 Jan 2026)
CVE-2023-52604 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 5.15.0-106.116 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 5.15.0-1061.67 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1061.67~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1124.134~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | 6.5.0-1020.20~22.04.1 |
| linux-aws-fips | — | 5.15.0-1061.67+fips1 |
| linux-aws-hwe | — | 4.15.0-1168.181~16.04.1 |
| linux-azure | — | 5.15.0-1063.72 |
| linux-azure-4.15 | — | 4.15.0-1177.192 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1063.72~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1129.136~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | 6.5.0-1021.22~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | — |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fde-6.8 | — | — |
| linux-azure-fips | — | 5.15.0-1063.72+fips1 |
| linux-bluefield | — | — |
| linux-fips | — | 5.15.0-106.116+fips1 |
| linux-gcp | — | 5.15.0-1059.67 |
| linux-gcp-4.15 | — | 4.15.0-1162.179 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1059.67~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1128.137~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | 6.5.0-1020.20~22.04.1 |
| linux-gcp-fips | — | 5.15.0-1059.67+fips1 |
| linux-gke | — | 5.15.0-1058.63 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.15.0-1044.51 |
| linux-gkeop-5.15 | — | 5.15.0-1044.51~20.04.1 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-106.116~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | 5.4.0-181.201~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | 6.5.0-35.35~22.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 5.15.0-1054.57 |
| linux-ibm-5.15 | — | 5.15.0-1054.57~20.04.1 |
| linux-ibm-5.4 | — | 5.4.0-1071.76~18.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1054.56 |
| linux-intel-iotg | — | 5.15.0-1057.63 |
| linux-intel-iotg-5.15 | — | 5.15.0-1058.64~20.04.1 |
| linux-iot | — | 5.4.0-1036.37 |
| linux-kvm | — | 5.15.0-1058.63 |
| linux-lowlatency | — | 5.15.0-106.116 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-106.116~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | 6.5.0-35.35.1~22.04.1 |
| linux-lts-xenial | — | 4.4.0-254.288~14.04.1 |
| linux-nvidia | — | 5.15.0-1054.55 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | 6.5.0-1019.19 |
| linux-nvidia-tegra | — | 5.15.0-1026.26 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1027.27~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1015.15 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | — |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | — |
| linux-oem-6.1 | — | 6.1.0-1035.35 |
| linux-oem-6.5 | — | 6.5.0-1023.24 |
| linux-oracle | — | 5.15.0-1059.65 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1059.65~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1123.132~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.5 | — | 6.5.0-1023.23~22.04.1 |
| linux-raspi | — | 5.15.0-1054.57 |
| linux-raspi-5.4 | — | 5.4.0-1108.120~18.04.1 |
| linux-raspi-realtime | — | 6.8.0-2001.1 |
| linux-raspi2 | — | — |
| linux-realtime | — | 5.15.0-1062.70 |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1057.61~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.5 | — | 6.5.0-35.35.1~22.04.1 |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | 6.5.0-1014.15~22.04.1 |
| linux-xilinx-zynqmp | — | 5.15.0-1030.34 |
References
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