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CVE Record

CVE-2024-56576: media: i2c: tc358743: Fix crash in the probe error path when using polling

In the Linux kernel, the following vulnerability has been resolved: media: i2c: tc358743: Fix crash in the probe error path when using polling If an error occurs in the probe() function, we should remove the polling timer that was alarmed earlier, otherwise the timer is called with arguments that are already freed, which results in a crash. ------------[ cut here ]------------ WARNING: CPU: 3 PID: 0 at kernel/time/timer.c:1830 __run_timers+0x244/0x268 Modules linked in: CPU: 3 UID: 0 PID: 0 Comm: swapper/3 Not tainted 6.11.0 #226 Hardware name: Diasom DS-RK3568-SOM-EVB (DT) pstate: 804000c9 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __run_timers+0x244/0x268 lr : __run_timers+0x1d4/0x268 sp : ffffff80eff2baf0 x29: ffffff80eff2bb50 x28: 7fffffffffffffff x27: ffffff80eff2bb00 x26: ffffffc080f669c0 x25: ffffff80efef6bf0 x24: ffffff80eff2bb00 x23: 0000000000000000 x22: dead000000000122 x21: 0000000000000000 x20: ffffff80efef6b80 x19: ffffff80041c8bf8 x18: ffffffffffffffff x17: ffffffc06f146000 x16: ffffff80eff27dc0 x15: 000000000000003e x14: 0000000000000000 x13: 00000000000054da x12: 0000000000000000 x11: 00000000000639c0 x10: 000000000000000c x9 : 0000000000000009 x8 : ffffff80eff2cb40 x7 : ffffff80eff2cb40 x6 : ffffff8002bee480 x5 : ffffffc080cb2220 x4 : ffffffc080cb2150 x3 : 00000000000f4240 x2 : 0000000000000102 x1 : ffffff80eff2bb00 x0 : ffffff80041c8bf0 Call trace:  __run_timers+0x244/0x268  timer_expire_remote+0x50/0x68  tmigr_handle_remote+0x388/0x39c  run_timer_softirq+0x38/0x44  handle_softirqs+0x138/0x298  __do_softirq+0x14/0x20  ____do_softirq+0x10/0x1c  call_on_irq_stack+0x24/0x4c  do_softirq_own_stack+0x1c/0x2c  irq_exit_rcu+0x9c/0xcc  el1_interrupt+0x48/0xc0  el1h_64_irq_handler+0x18/0x24  el1h_64_irq+0x7c/0x80  default_idle_call+0x34/0x68  do_idle+0x23c/0x294  cpu_startup_entry+0x38/0x3c  secondary_start_kernel+0x128/0x160  __secondary_switched+0xb8/0xbc ---[ end trace 0000000000000000 ]---

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux media driver can leave a timer running after device setup fails. The timer may later access freed data and crash the kernel. Business risk is primarily outage or device instability on systems using the TC358743 driver in polling mode; broad exposure across ordinary Linux servers and workstations is not established.

Executive priority

Prioritize validation on operational technology, embedded appliances, and video systems where an unexpected kernel crash affects safety or service availability. Routine enterprise systems without this specialized driver are lower priority. Patch confirmed exposures through normal kernel maintenance promptly; emergency organization-wide action is not supported by the supplied exploitation evidence.

Technical view

The tc358743 I2C media driver's probe path can arm a polling timer without cancelling it after a subsequent probe failure. The callback then receives already-freed arguments, producing a kernel timer warning and crash. The supplied CVSS 3.1 score is 7.8 with local, low-privilege access, although the description directly demonstrates availability impact only.

Likely exposure

Exposure is most likely on Linux devices that include or load the tc358743 media driver, use polling, and encounter an error during driver probing. The bundle identifies affected Linux releases but does not provide sufficiently clear version ranges for reliable package-level decisions. Confirm status through the applicable kernel or distribution advisory.

Exploitation context

The bundle marks this CVE as absent from KEV and provides no evidence of active exploitation. Its CVSS vector assumes local low-privilege access, but the supplied sources do not establish attacker control of the probe failure or demonstrate confidentiality and integrity impact. Practical exploitation beyond a kernel crash remains unconfirmed.

Researcher notes

This appears to be a probe-error-path lifetime defect involving an armed polling timer and freed callback state. The trace supports a kernel crash, but no CWE is assigned. The affected-version data is ambiguous, so commit ancestry and distribution backport records are more dependable than comparing the listed versions alone. No public exploit evidence is included.

Mitigation direction

  • Update to a supported kernel containing the applicable upstream stable correction or distribution backport.
  • Consult the device or Linux distribution vendor for exact fixed package versions and deployment guidance.
  • Reboot affected devices after updating so they run the corrected kernel.
  • Prioritize embedded, video, and capture systems that use the TC358743 driver in polling mode.

Validation and detection

  • Inventory kernel versions and determine whether the tc358743 driver is configured, installed, or loaded.
  • Verify whether affected devices operate the driver in polling mode.
  • Review kernel logs for tc358743 probe failures, timer warnings, or matching crash traces.
  • Confirm the running kernel contains the appropriate stable fix or documented distribution backport after reboot.
Prepared
Confidence
medium
Sources
11

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2024-56576 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
1ADP providers
10Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2024-56576Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a, 4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a, 4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a, 4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a, 4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a, 4e66a52a2e4c832dfa35a39204d0f7ce717d4a4a, 4e66a52a2e4c832dfa35a39204d0f7ce717d4a4aunaffected
LinuxLinux4.13, 0, 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.64, 6.12.4, 6.13affected
Weakness

CWE details

No CWE listed

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