{ "schema_version": "1.6.1", "id": "RPI-CVE-2024-35830", "modified": "2026-10-09T11:39:44Z", "upstream": [ "CVE-2024-35830" ], "published": "2024-05-17T13:41:49Z", "summary": "media: tc358743: register v4l2 async device only after successful setup", "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: tc358743: register v4l2 async device only after successful setup\n\nEnsure the device has been setup correctly before registering the v4l2\nasync device, thus allowing userspace to access.", "severity": [ { "type": "CVSS_V3", "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H" } ], "affected": [ { "package": { "ecosystem": "Raspberry Pi OS:12", "name": "linux" }, "versions": [ "1:6.1.21-1+rpt1", "1:6.1.47-1+rpt2", "1:6.1.47-1+rpt4", "1:6.1.54-1+rpt2", "1:6.1.58-1+rpt2", "1:6.1.63-1+rpt1", "1:6.1.73-1+rpt1", "1:6.6.20-1+rpt1" ], "ecosystem_specific": { "binaries": [ { "binary_name": "linux-image-6.1.0-rpi1-rpi-v6", "binary_version": 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false }, "1:6.1.54-1+rpt2": { "linux_commit": "2906f7abdc03d4a92b6b0e2e0c87ea2a9dffe8f7", "upstream_version": "6.1.54", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.1.83" }, "1:6.1.58-1+rpt2": { "linux_commit": "ccf1586ad0663fa91238ac56abf6340d6d740d18", "upstream_version": "6.1.58", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.1.83" }, "1:6.1.63-1+rpt1": { "linux_commit": null, "upstream_version": "6.1.63", "assessment": "upstream version (no usable Linux commit)", "upstream_fixed": "6.1.83" }, "1:6.1.73-1+rpt1": { "linux_commit": null, "upstream_version": "6.1.73", "assessment": "upstream version (no usable Linux commit)", "upstream_fixed": "6.1.83" }, "1:6.6.20-1+rpt1": { "linux_commit": "6f16847710cc0502450788b9f12f0a14d3429668", "upstream_version": "6.6.20", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.23" } } } } ], "references": [ { "type": "ADVISORY", "url": "https://www.cve.org/CVERecord?id=CVE-2024-35830" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/17c2650de14842c25c569cbb2126c421489a3a24" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/daf21394f9898fb9f0698c3e50de08132d2164e6" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/610f20e5cf35ca9c0992693cae0dd8643ce932e7" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/b8505a1aee8f1edc9d16d72ae09c93de086e2a1a" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/8ba8db9786b55047df5ad3db3e01dd886687a77d" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/edbb3226c985469a2f8eb69885055c9f5550f468" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/c915c46a25c3efb084c4f5e69a053d7f7a635496" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/4f1490a5d7a0472ee5d9f36547bc4ba46be755c7" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/87399f1ff92203d65f1febf5919429f4bb613a02" } ], "database_specific": { "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git", "upstream_modified": "2026-08-05T11:52:36Z", "severity": { "source": "kernel CNA", "cvss_v3_score": 7.8, "cvss_v3_severity": "High", "scenario": "AV:L - The vulnerable code is reached through `ioctl()` on the `/dev/v4l-subdev*` character device node created by `v4l2_device_register_subdev_nodes()`, so the attacker needs local system access. No network, RF, or physical-bus path reaches these subdev ops.\nAC:L - The attacker controls their side of the race entirely and can spin on `open()`/`ioctl()`; the node becomes visible the moment `v4l2_async_register_subdev()` returns while probe still has tens of milliseconds of I\u00b2C register programming, CEC adapter allocation, and IRQ setup left to run, making the window large and reliably winnable.\nPR:L - Only an open file descriptor on the V4L2 subdev node is needed \u2014 `VIDIOC_SUBDEV_S_FMT`, `S_EDID`, and `S_DV_TIMINGS` have no capability check (only `VIDIOC_DBG_*` gate on `CAP_SYS_ADMIN`), and these nodes are routinely accessible to unprivileged users via the `video` group, logind uaccess ACLs, or the Android camera/media UID.\nUI:N - No victim action is required; the attacker acts alone against a driver probe that occurs as a normal system event at boot or module load.\nS:U - The corrupted objects \u2014 the `tc358743_state` mutex, the delayed work/timer, and the freed subdev \u2014 are all ordinary kernel memory in the same security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - Use of the uninitialized `confctl_mutex` and `delayed_work`/`timer_list`, plus the dangling `v4l2_subdev` left registered on the global `subdev_list` after a devm-freed probe failure, give memory-corruption and use-after-free primitives over kernel slab memory that can be groomed into an arbitrary kernel read.\nI:H - `INIT_DELAYED_WORK()` re-initializing a timer already linked into the timer base's hlist, `mutex_init()` racing a live waiter, and dereferencing `sd->ops` from freed memory all yield controlled writes and control-flow hijack potential; on affected trees lacking the `WARN_ON_ONCE(!fn)` guard, `expire_timers()` calls a NULL function pointer outright.\nA:H - The immediate and easily reproduced outcome is a kernel oops or panic \u2014 NULL-pointer write via `list_add_tail()` on the zeroed `wait_list`, `WARN_ON(!work->func)` in `__flush_work()` (panic under `panic_on_warn`), timer-base list corruption, or a use-after-free crash." } } }