CVE-2024-38544
RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt
In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the
resp_pkts queue and then a decision is made whether to run the completer
task inline or schedule it. Finally the skb is dereferenced to bump a 'hw'
performance counter. This is wrong because if the completer task is
already running in a separate thread it may have already processed the skb
and freed it which can cause a seg fault. This has been observed
infrequently in testing at high scale.
This patch fixes this by changing the order of enqueuing the packet until
after the counter is accessed.
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: RDMA/rxe: corrige la falla de segmentación en rxe_comp_queue_pkt En rxe_comp_queue_pkt(), un paquete de respuesta entrante skb se pone en cola en la cola resp_pkts y luego se toma una decisión si se ejecuta la tarea de finalización en línea o programarla. Finalmente, se elimina la referencia al skb para aumentar un contador de rendimiento 'hw'. Esto es incorrecto porque si la tarea de finalización ya se está ejecutando en un hilo separado, es posible que ya haya procesado el skb y lo haya liberado, lo que puede causar una falla de segmentación. Esto se ha observado con poca frecuencia en pruebas a gran escala. Este parche soluciona este problema cambiando el orden de poner en cola el paquete hasta que se accede al contador.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-06-18 CVE Reserved
- 2024-06-19 CVE Published
- 2024-06-20 EPSS Updated
- 2024-08-02 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2024-38544 | 2024-08-28 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2293455 | 2024-08-28 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 6.1.93 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 6.1.93" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 6.6.33 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 6.6.33" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 6.8.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 6.8.12" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 6.9.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 6.9.3" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 6.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 6.10" | en |
Affected
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