CVE-2024-49982

{"id": "CVE-2024-49982", "cveTags": [], "metrics": {}, "published": "2024-10-21T18:15:18.733", "references": [{"url": "https://git.kernel.org/stable/c/07b418d50ccbbca7e5d87a3a0d41d436cefebf79", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6d6e54fc71ad1ab0a87047fd9c211e75d86084a3", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8253a60c89ec35c8f36fb2cc08cdf854c7a3eb58", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/89d9a69ae0c667e4d9d028028e2dcc837bae626f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/acc5103a0a8c200a52af7d732c36a8477436a3d3", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bc2cbf7525ac288e07d465f5a1d8cb8fb9599254", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f63461af2c1a86af4217910e47a5c46e3372e645", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naoe: fix the potential use-after-free problem in more places\n\nFor fixing CVE-2023-6270, f98364e92662 (\"aoe: fix the potential\nuse-after-free problem in aoecmd_cfg_pkts\") makes tx() calling dev_put()\ninstead of doing in aoecmd_cfg_pkts(). It avoids that the tx() runs\ninto use-after-free.\n\nThen Nicolai Stange found more places in aoe have potential use-after-free\nproblem with tx(). e.g. revalidate(), aoecmd_ata_rw(), resend(), probe()\nand aoecmd_cfg_rsp(). Those functions also use aoenet_xmit() to push\npacket to tx queue. So they should also use dev_hold() to increase the\nrefcnt of skb->dev.\n\nOn the other hand, moving dev_put() to tx() causes that the refcnt of\nskb->dev be reduced to a negative value, because corresponding\ndev_hold() are not called in revalidate(), aoecmd_ata_rw(), resend(),\nprobe(), and aoecmd_cfg_rsp(). This patch fixed this issue."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: aoe: soluciona el posible problema de use-after-free en m\u00e1s lugares Para solucionar CVE-2023-6270, f98364e92662 (\"aoe: soluciona el posible problema de use-after-free en aoecmd_cfg_pkts\") hace que tx() llame a dev_put() en lugar de hacerlo en aoecmd_cfg_pkts(). Esto evita que tx() se ejecute en use-after-free. Luego, Nicolai Stange encontr\u00f3 que m\u00e1s lugares en aoe tienen un posible problema de use-after-free con tx(). Por ejemplo, revalidate(), aoecmd_ata_rw(), resend(), probe() y aoecmd_cfg_rsp(). Esas funciones tambi\u00e9n usan aoenet_xmit() para enviar paquetes a la cola de tx. Por lo tanto, tambi\u00e9n deber\u00edan usar dev_hold() para aumentar el refcnt de skb->dev. Por otra parte, mover dev_put() a tx() hace que el refcnt de skb->dev se reduzca a un valor negativo, porque los dev_hold() correspondientes no se llaman en revalidate(), aoecmd_ata_rw(), resend(), probe() y aoecmd_cfg_rsp(). Este parche solucion\u00f3 este problema."}], "lastModified": "2024-10-23T15:13:25.583", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}