fkie_cve-2024-49938
Vulnerability from fkie_nvd
Published
2024-10-21 18:15
Modified
2024-11-13 15:25
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit Syzbot points out that skb_trim() has a sanity check on the existing length of the skb, which can be uninitialised in some error paths. The intent here is clearly just to reset the length to zero before resubmitting, so switch to calling __skb_set_length(skb, 0) directly. In addition, __skb_set_length() already contains a call to skb_reset_tail_pointer(), so remove the redundant call. The syzbot report came from ath9k_hif_usb_reg_in_cb(), but there's a similar usage of skb_trim() in ath9k_hif_usb_rx_cb(), change both while we're at it.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/012ae530afa0785102360de452745d33c99a321bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2c230210ec0ae6ed08306ac70dc21c24b817bb95Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a875220670475d9247e576c15dc29823100a4e4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/94745807f3ebd379f23865e6dab196f220664179Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9f4e28e8adaf0715bd4e01462af0a52ee46b01fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b02eb7c86ff2ef1411c3095ec8a52b13f68db04fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1f2fbc6a769081503f6ffedbb5cd1ac497f0e77Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e37e348835032d6940ec89308cc8996ded691d2dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e6b9bf32e0695e4f374674002de0527d2a6768ebPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

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   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit\n\nSyzbot points out that skb_trim() has a sanity check on the existing length of\nthe skb, which can be uninitialised in some error paths. The intent here is\nclearly just to reset the length to zero before resubmitting, so switch to\ncalling __skb_set_length(skb, 0) directly. In addition, __skb_set_length()\nalready contains a call to skb_reset_tail_pointer(), so remove the redundant\ncall.\n\nThe syzbot report came from ath9k_hif_usb_reg_in_cb(), but there's a similar\nusage of skb_trim() in ath9k_hif_usb_rx_cb(), change both while we're at it.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: ath9k_htc: Use __skb_set_length() para restablecer urb antes de volver a enviar Syzbot señala que skb_trim() tiene una comprobación de cordura en la longitud existente del skb, que puede no inicializarse en algunas rutas de error. La intención aquí es claramente solo restablecer la longitud a cero antes de volver a enviar, así que cambie a llamar a __skb_set_length(skb, 0) directamente. Además, __skb_set_length() ya contiene una llamada a skb_reset_tail_pointer(), así que elimine la llamada redundante. El informe de syzbot vino de ath9k_hif_usb_reg_in_cb(), pero hay un uso similar de skb_trim() en ath9k_hif_usb_rx_cb(), cambie ambos mientras estamos en eso.",
      },
   ],
   id: "CVE-2024-49938",
   lastModified: "2024-11-13T15:25:11.290",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 5.5,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
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   },
   published: "2024-10-21T18:15:15.547",
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   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Analyzed",
   weaknesses: [
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            {
               lang: "en",
               value: "CWE-824",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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