# CVE-2024-41050: linux: In the Linux kernel, the following vulnerability has been resolved:  cachefiles: cyclic allocation of msg_id to avoid...

CVE-2024-41050 is fixed in 43 products on 1 platform, first by DEBIAN-CVE-2024-41050, released July 29, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-41050
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0028
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 29, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  cachefiles: cyclic allocation of msg_id to avoid reuse  Reusing the msg_id after a maliciously completed reopen request may cause a read request to remain unprocessed and result in a hung, as shown below:         t1       |      t2       |      t3 ------------------------------------------------- cachefiles_ondemand_select_req  cachefiles_ondemand_object_is_close(A)  cachefiles_ondemand_set_object_reopening(A)  queue_work(fscache_object_wq, &info->work)                 ondemand_object_worker                  cachefiles_ondemand_init_object(A)                   cachefiles_ondemand_send_req(OPEN)                     // get msg_id 6                     wait_for_completion(&req_A->done) cachefiles_ondemand_daemon_read  // read msg_id 6 req_A  cachefiles_ondemand_get_fd  copy_to_user                                 // Malicious completion msg_id 6                                 copen 6,-1                                 cachefiles_ondemand_copen                                  complete(&req_A->done)                                  // will not set the object to close                                  // because ondemand_id && fd is valid.                  // ondemand_object_worker() is done                 // but the object is still reopening.                                  // new open req_B                                 cachefiles_ondemand_init_object(B)                                  cachefiles_ondemand_send_req(OPEN)                                  // reuse msg_id 6 process_open_req  copen 6,A.size  // The expected failed copen was executed successfully  Expect copen to fail, and when it does, it closes fd, which sets the object to close, and then close triggers reopen again. However, due to msg_id reuse resulting in a successful copen, the anonymous fd is not closed until the daemon exits. Therefore read requests waiting for reopen to complete may trigger hung task.  To avoid this issue, allocate the msg_id cyclically to avoid reusing the msg_id for a very short duration of time.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | bpftool-debuginfo amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | dtb-aarch64 opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-64kb opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-64kb sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-azure opensuse-leap 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-azure sles 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-debug opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-debuginfo amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-default opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-default sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-default-base opensuse-leap 15.6 | 6.4.0-150600.23.22.1.150600.12.8.3 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-default-base sles 15.6 | 6.4.0-150600.23.22.1.150600.12.8.3 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-devel amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-docs opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-docs sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-headers amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-kvmsmall opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-libbpf amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-libbpf-devel amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-libbpf-static amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-livepatch-6.1.102-108.177 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-livepatch-SLE15-SP6-RT_Update_2 sles 15.6 | 1-150600.1.3.2 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-livepatch-SLE15-SP6_Update_4 sles 15.6 | 1-150600.13.3.3 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-modules-extra amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-modules-extra-common amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-obs-build opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-obs-build sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-obs-qa opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-rt opensuse-leap 15.6 | 6.4.0-150600.10.8.3 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-rt_debug opensuse-leap 15.6 | 6.4.0-150600.10.8.3 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-source opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-source sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-source-azure opensuse-leap 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-source-azure sles 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-source-rt opensuse-leap 15.6 | 6.4.0-150600.10.8.3 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-syms opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-syms sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-syms-azure opensuse-leap 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-syms-azure sles 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-syms-rt opensuse-leap 15.6 | 6.4.0-150600.10.8.1 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-tools amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-tools-debuginfo amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-tools-devel amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | kernel-zfcpdump opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-zfcpdump sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.106-1 | [DEBIAN-CVE-2024-41050](https://patchblox.com/security/data/fix/linux/debian-cve-2024-41050.md) | Jul 29, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.9.10-1 | [DEBIAN-CVE-2024-41050](https://patchblox.com/security/data/fix/linux/debian-cve-2024-41050.md) | Jul 29, 2024 |
| Linux | linux Debian 14 | 6.9.10-1 | [DEBIAN-CVE-2024-41050](https://patchblox.com/security/data/fix/linux/debian-cve-2024-41050.md) | Jul 29, 2024 |
| Linux | perf amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | perf-debuginfo amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | python3-perf amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |
| Linux | python3-perf-debuginfo amzn 2023 | 6.1.102-108.177.amzn2023 | [ALAS2023-2024-679](https://patchblox.com/security/data/fix/linux/alas2023-2024-679.md) | Aug 1, 2024 |

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