- Vulnerability/
- CVE-2024-26848
17/4/2024
17/4/2024
2/8/2024
CVE-2024-26848: afs: Fix endless loop in directory parsing
First published: Wed Apr 17 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: afs: Fix endless loop in directory parsing If a directory has a block with only ".__afsXXXX" files in it (from uncompleted silly-rename), these .__afsXXXX files are skipped but without advancing the file position in the dir_context. This leads to afs_dir_iterate() repeating the block again and again. Fix this by making the code that skips the .__afsXXXX file also manually advance the file position. The symptoms are a soft lookup: watchdog: BUG: soft lockup - CPU#3 stuck for 52s! [check:5737] ... RIP: 0010:afs_dir_iterate_block+0x39/0x1fd ... ? watchdog_timer_fn+0x1a6/0x213 ... ? asm_sysvec_apic_timer_interrupt+0x16/0x20 ? afs_dir_iterate_block+0x39/0x1fd afs_dir_iterate+0x10a/0x148 afs_readdir+0x30/0x4a iterate_dir+0x93/0xd3 __do_sys_getdents64+0x6b/0xd4 This is almost certainly the actual fix for: https://bugzilla.kernel.org/show_bug.cgi?id=218496
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.218-1 5.10.221-1 6.1.94-1 6.1.99-1 6.9.10-1 6.9.12-1 | |
| ubuntu/linux | <5.4.0-186.206 | 5.4.0-186.206 |
| ubuntu/linux | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-aws | <5.4.0-1126.136 | 5.4.0-1126.136 |
| ubuntu/linux-aws | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-aws-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-aws-5.4 | <5.4.0-1126.136~18.04.1 | 5.4.0-1126.136~18.04.1 |
| ubuntu/linux-aws-5.4 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-aws-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-aws-fips | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-aws-hwe | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-azure | <5.4.0-1131.138 | 5.4.0-1131.138 |
| ubuntu/linux-azure | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-azure-4.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-azure-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-azure-5.4 | <5.4.0-1131.138~18.04.1 | 5.4.0-1131.138~18.04.1 |
| ubuntu/linux-azure-5.4 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-azure-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-azure-fde | <5.15.0-1067.76.1 | 5.15.0-1067.76.1 |
| ubuntu/linux-azure-fde | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-azure-fde-5.15 | <5.15.0-1065.74~20.04.1.1 | 5.15.0-1065.74~20.04.1.1 |
| ubuntu/linux-azure-fde-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-azure-fips | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-bluefield | <5.4.0-1086.93 | 5.4.0-1086.93 |
| ubuntu/linux-bluefield | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-fips | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-gcp | <5.4.0-1130.139 | 5.4.0-1130.139 |
| ubuntu/linux-gcp | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-gcp-4.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-gcp-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-gcp-5.4 | <5.4.0-1130.139~18.04.1 | 5.4.0-1130.139~18.04.1 |
| ubuntu/linux-gcp-5.4 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-gcp-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-gcp-fips | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-gke | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-gkeop | <5.4.0-1093.97 | 5.4.0-1093.97 |
| ubuntu/linux-gkeop | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-gkeop-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-hwe | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-hwe-5.15 | <5.15.0-113.123~20.04.1 | 5.15.0-113.123~20.04.1 |
| ubuntu/linux-hwe-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-hwe-5.4 | <5.4.0-186.206~18.04.1 | 5.4.0-186.206~18.04.1 |
| ubuntu/linux-hwe-5.4 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-hwe-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-ibm | <5.4.0-1073.78 | 5.4.0-1073.78 |
| ubuntu/linux-ibm | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-ibm-5.15 | <5.15.0-1057.60~20.04.1 | 5.15.0-1057.60~20.04.1 |
| ubuntu/linux-ibm-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-ibm-5.4 | <5.4.0-1073.78~18.04.1 | 5.4.0-1073.78~18.04.1 |
| ubuntu/linux-ibm-5.4 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-intel | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-intel-iotg | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-intel-iotg-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-iot | <5.4.0-1038.39 | 5.4.0-1038.39 |
| ubuntu/linux-iot | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-kvm | <5.4.0-1114.121 | 5.4.0-1114.121 |
| ubuntu/linux-kvm | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-laptop | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-lowlatency | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-lowlatency-hwe-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-lowlatency-hwe-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-lts-xenial | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-nvidia | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-nvidia-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-nvidia-6.8 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-nvidia-lowlatency | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-oem-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-oem-6.8 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-oracle | <5.4.0-1125.134 | 5.4.0-1125.134 |
| ubuntu/linux-oracle | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-oracle-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-oracle-5.4 | <5.4.0-1125.134~18.04.1 | 5.4.0-1125.134~18.04.1 |
| ubuntu/linux-oracle-5.4 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-oracle-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-raspi | <5.4.0-1110.122 | 5.4.0-1110.122 |
| ubuntu/linux-raspi | <5.15.0-1058.61 | 5.15.0-1058.61 |
| ubuntu/linux-raspi | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-raspi-5.4 | <5.4.0-1110.122~18.04.1 | 5.4.0-1110.122~18.04.1 |
| ubuntu/linux-raspi-5.4 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-riscv | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-riscv-5.15 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-riscv-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-starfive | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-starfive-6.5 | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
| ubuntu/linux-xilinx-zynqmp | <5.4.0-1045.49 | 5.4.0-1045.49 |
| ubuntu/linux-xilinx-zynqmp | <6.8~<5.4.271<5.15.151 | 6.8~ 5.4.271 5.15.151 |
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Reference Links
- https://git.kernel.org/stable/c/058ed71e0f7aa3b6694ca357e23d084e5d3f2470
- https://git.kernel.org/stable/c/106e14ca55a0acb3236ee98813a1d243f8aa2d05
- https://git.kernel.org/stable/c/2afdd0cb02329464d77f3ec59468395c791a51a4
- https://git.kernel.org/stable/c/5c78be006ed9cb735ac2abf4fd64f3f4ea26da31
- https://git.kernel.org/stable/c/5f7a07646655fb4108da527565dcdc80124b14c4
- https://git.kernel.org/stable/c/76426abf9b980b46983f97de8e5b25047b4c9863
- https://git.kernel.org/stable/c/80b15346492bdba677bbb0adefc611910e505f7b
- https://git.kernel.org/stable/c/854ebf45a4ddd4cadeffb6644e88d19020634e1a
- https://git.kernel.org/stable/c/96370ba395c572ef496fd2c7afc4a1ab3dedd3f0
- https://git.kernel.org/stable/c/9c41f4935625218a2053a2dce1423c3054169809
- https://git.kernel.org/stable/c/a6ffae61ad9ebf2fdcb943135b2f30c85f49cd27
- https://git.kernel.org/stable/c/b94f434fe977689da4291dc21717790b9bd1c064
- https://git.kernel.org/stable/c/f67898867b6b0f4542cddc7fe57997978b948a7a
- https://git.kernel.org/stable/c/fe02316e4933befc621fa125efb8f8b4d04cceec
- https://launchpad.net/bugs/cve/CVE-2024-26848
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://git.kernel.org/linus/5f7a07646655fb4108da527565dcdc80124b14c4
- https://security-tracker.debian.org/tracker/CVE-2024-26848
- https://www.cve.org/CVERecord?id=CVE-2024-26848
- https://git.kernel.org/linus/5f7a07646655fb4108da527565dcdc80124b14c4 (6.8-rc7)
- https://ubuntu.com/security/notices/USN-6816-1
- https://ubuntu.com/security/notices/USN-6817-1
- https://ubuntu.com/security/notices/USN-6817-2
- https://ubuntu.com/security/notices/USN-6831-1
- https://ubuntu.com/security/notices/USN-6817-3
- https://ubuntu.com/security/notices/USN-6867-1
- https://ubuntu.com/security/notices/USN-6871-1
- https://ubuntu.com/security/notices/USN-6892-1
- https://ubuntu.com/security/notices/USN-6919-1
- https://nvd.nist.gov/vuln/detail/CVE-2024-26848
- https://git.kernel.org/linus/57e9d49c54528c49b8bffe6d99d782ea051ea534
- https://git.kernel.org/linus/5f7a07646655fb4108da527565dcdc80124b14c4|0aec3847d044273733285dcff90afda89ad461d2
- https://ubuntu.com/security/CVE-2024-26848
Parent vulnerabilities
(Appears in the following advisories)
- agent/severity
- agent/title
- agent/type
- agent/remedy
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/description
- agent/event
- collector/nvd-api
- source/NVD
- collector/nvd-cve
- agent/references
- agent/tags
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- package-manager/debian
- package-manager/ubuntu