CVE-2023-52993
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
In the Linux kernel, the following vulnerability has been resolved: x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL Baoquan reported that after triggering a crash the subsequent crash-kernel fails to boot about half of the time. It triggers a NULL pointer dereference in the periodic tick code. This happens because the legacy timer interrupt (IRQ0) is resent in software which happens in soft interrupt (tasklet) context. In this context get_irq_regs() returns NULL which leads to the NULL pointer dereference. The reason for the resend is a spurious APIC interrupt on the IRQ0 vector which is captured and leads to a resend when the legacy timer interrupt is enabled. This is wrong because the legacy PIC interrupts are level triggered and therefore should never be resent in software, but nothing ever sets the IRQ_LEVEL flag on those interrupts, so the core code does not know about their trigger type. Ensure that IRQ_LEVEL is set when the legacy PCI interrupts are set up.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| a4633adcdbc15ac51afcd0e1395de58cee27cf92 | affected | git | 744fe9be9665227335539b7a77ece8d9ff62b6c0 | Unavailable | None listed |
| a4633adcdbc15ac51afcd0e1395de58cee27cf92 | affected | git | 496975d1a2937f4baadf3d985991b13fc4fc4f27 | Unavailable | None listed |
| a4633adcdbc15ac51afcd0e1395de58cee27cf92 | affected | git | 8770cd9d7c14aa99c255a0d08186f0be953e1638 | Unavailable | None listed |
| a4633adcdbc15ac51afcd0e1395de58cee27cf92 | affected | git | e284c273dbb4c1ed68d4204bff94d0b10e4a90f5 | Unavailable | None listed |
| a4633adcdbc15ac51afcd0e1395de58cee27cf92 | affected | git | 0b08201158f177aab469e356b4d6af24fdd118df | Unavailable | None listed |
| a4633adcdbc15ac51afcd0e1395de58cee27cf92 | affected | git | 137f1b47da5f58805da42c1b7811e28c1e353f39 | Unavailable | None listed |
| a4633adcdbc15ac51afcd0e1395de58cee27cf92 | affected | git | 5fa55950729d0762a787451dc52862c3f850f859 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.18 | Unavailable | None listed |
| 4.14.305 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.272 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.231 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.166 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.91 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.9 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |