media: edia: dvbdev: fix a use-after-free
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 4 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: media: edia: dvbdev: fix a use-after-free In dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed in several error-handling paths. However, *pdvbdev is not set to NULL after dvbdev's deallocation, causing use-after-frees in many places, for example, in the following call chain: budget_register |-> dvb_dmxdev_init |-> dvb_register_device |-> dvb_dmxdev_release |-> dvb_unregister_device |-> dvb_remove_device |-> dvb_device_put |-> kref_put When calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in dvb_register_device) could point to memory that had been freed in dvb_register_device. Thereafter, this pointer is transferred to kref_put and triggering a use-after-free.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.21 and later | 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2, 6.9 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.21 and later Fixed in 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2, 6.9 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 2.6.21 to before 4.19.311; 4.20 to before 5.4.273; 5.5 to before 5.10.214; 5.11 to before 5.15.153; 5.16 to before 6.1.83; 6.2 to before 6.6.23; 6.7 to before 6.7.11; 6.8 to before 6.8.2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.21 to before 4.19.311; 4.20 to before 5.4.273; 5.5 to before 5.10.214; 5.11 to before 5.15.153; 5.16 to before 6.1.83; 6.2 to before 6.6.23; 6.7 to before 6.7.11; 6.8 to before 6.8.2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2, 6.9
Red Hat 2 advisories
- RHSA-2024:10281 Released 2024-11-26 · Red Hat rating Moderatekernel:4.18.0 security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.30.1.el8_10, kernel-4.18.0-553.30.1.el8_10, kernel-abi-stablelists-4.18.0-553.30.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.30.1.el8_10
- RHSA-2024:10282 Released 2024-11-26 · Red Hat rating Lowkernel-rt:4.18.0 security update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.30.1.rt7.371.el8_10, kernel-rt-core-4.18.0-553.30.1.rt7.371.el8_10, kernel-rt-debug-4.18.0-553.30.1.rt7.371.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.30.1.rt7.371.el8_10, kernel-rt-core-4.18.0-553.30.1.rt7.371.el8_10, kernel-rt-debug-4.18.0-553.30.1.rt7.371.el8_10 +7
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:10281 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:10281 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:10282 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:10282 |
Not affected: 2 products
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-27043
- 2026-10-03 Alias added: GHSA-q2m9-j68q-x65j
References
Patch 11
- https://git.kernel.org/stable/c/d0f5c28333822f9baa5280d813124920720fd856
- https://git.kernel.org/stable/c/f20c3270f3ed5aa6919a87e4de9bf6c05fb57086
- https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644
- https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98e
- https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712
- https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62
- https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07d
- https://git.kernel.org/stable/c/b7586e902128e4fb7bfbb661cb52e4215a65637b
- https://git.kernel.org/stable/c/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
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- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-27043 · CVE Program
- CVE-2024-27043 · NVD
- FIRST EPSS
- GHSA-q2m9-j68q-x65j · GitHub Advisory Database · CC BY 4.0
- CVE-2024-27043 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences