CVSS: 5.5EPSS: 0%CPEs: 7EXPL: 0CVE-2024-35905 – bpf: Protect against int overflow for stack access size
https://notcve.org/view.php?id=CVE-2024-35905
In the Linux kernel, the following vulnerability has been resolved: bpf: Protect against int overflow for stack access size This patch re-introduces protection against the size of access to stack memory being negative; the access size can appear negative as a result of overflowing its signed int representation. This should not actually happen, as there are other protections along the way, but we should protect against it anyway. One code path was missing such protections (fixed in the previous patch in the series), causing out-of-bounds array accesses in check_stack_range_initialized(). This patch causes the verification of a program with such a non-sensical access size to fail. This check used to exist in a more indirect way, but was inadvertendly removed in a833a17aeac7. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Protección contra desbordamiento int para el tamaño de acceso a la pila. • https://git.kernel.org/stable/c/afea95d319ccb4ad2060dece9ac5e2e364dec543 https://git.kernel.org/stable/c/02962684258eb53f414a8a59854767be526e6abb https://git.kernel.org/stable/c/b1d4d54d32ce6342f5faffe71bae736540ce7cb5 https://git.kernel.org/stable/c/08b91babccbb168353f8d43fea0ed28a4cad568c https://git.kernel.org/stable/c/a833a17aeac73b33f79433d7cee68d5cafd71e4f https://git.kernel.org/stable/c/1858b8a331937f3976d8482cd5f6e1f945294ad3 https://git.kernel.org/stable/c/9970e059af471478455f9534e8c3db82f8c5496d https://git.kernel.org/stable/c/37dc1718dc0c4392dbfcb9adec22a776e •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2024-35904 – selinux: avoid dereference of garbage after mount failure
https://notcve.org/view.php?id=CVE-2024-35904
In the Linux kernel, the following vulnerability has been resolved: selinux: avoid dereference of garbage after mount failure In case kern_mount() fails and returns an error pointer return in the error branch instead of continuing and dereferencing the error pointer. While on it drop the never read static variable selinuxfs_mount. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: selinux: evita la desreferenciación de basura después de un error de montaje En caso de que kern_mount() falle y devuelva un puntero de error en la rama de error en lugar de continuar y desreferenciar el puntero de error. Mientras está en él, suelte la variable estática nunca leída selinuxfs_mount. • https://git.kernel.org/stable/c/0619f0f5e36f12e100ef294f5980cfe7c93ff23e https://git.kernel.org/stable/c/477ed6789eb9f3f4d3568bb977f90c863c12724e https://git.kernel.org/stable/c/68784a5d01b8868ff85a7926676b6729715fff3c https://git.kernel.org/stable/c/37801a36b4d68892ce807264f784d818f8d0d39b http://www.openwall.com/lists/oss-security/2024/05/30/1 http://www.openwall.com/lists/oss-security/2024/05/30/2 https://access.redhat.com/security/cve/CVE-2024-35904 https://bugzilla.redhat.com/show_bug.cgi?id=2281655 •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2024-35903 – x86/bpf: Fix IP after emitting call depth accounting
https://notcve.org/view.php?id=CVE-2024-35903
In the Linux kernel, the following vulnerability has been resolved: x86/bpf: Fix IP after emitting call depth accounting Adjust the IP passed to `emit_patch` so it calculates the correct offset for the CALL instruction if `x86_call_depth_emit_accounting` emits code. Otherwise we will skip some instructions and most likely crash. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: x86/bpf: corrige la IP después de emitir la contabilidad de profundidad de llamadas. Ajuste la IP pasada a `emit_patch` para que calcule el desplazamiento correcto para la instrucción CALL si `x86_call_ Depth_emit_accounting` emite código. De lo contrario, nos saltaremos algunas instrucciones y lo más probable es que fallemos. • https://git.kernel.org/stable/c/b2e9dfe54be4d023124d588d6f03d16a9c0d2507 https://git.kernel.org/stable/c/3f9d57c771656bfd651e22edcfdb5f60e62542d4 https://git.kernel.org/stable/c/81166178cf0a0062a22b1b3b5368183d39577028 https://git.kernel.org/stable/c/9d98aa088386aee3db1b7b60b800c0fde0654a4a •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2024-35902 – net/rds: fix possible cp null dereference
https://notcve.org/view.php?id=CVE-2024-35902
In the Linux kernel, the following vulnerability has been resolved: net/rds: fix possible cp null dereference cp might be null, calling cp->cp_conn would produce null dereference [Simon Horman adds:] Analysis: * cp is a parameter of __rds_rdma_map and is not reassigned. * The following call-sites pass a NULL cp argument to __rds_rdma_map() - rds_get_mr() - rds_get_mr_for_dest * Prior to the code above, the following assumes that cp may be NULL (which is indicative, but could itself be unnecessary) trans_private = rs->rs_transport->get_mr( sg, nents, rs, &mr->r_key, cp ? cp->cp_conn : NULL, args->vec.addr, args->vec.bytes, need_odp ? ODP_ZEROBASED : ODP_NOT_NEEDED); * The code modified by this patch is guarded by IS_ERR(trans_private), where trans_private is assigned as per the previous point in this analysis. The only implementation of get_mr that I could locate is rds_ib_get_mr() which can return an ERR_PTR if the conn (4th) argument is NULL. * ret is set to PTR_ERR(trans_private). rds_ib_get_mr can return ERR_PTR(-ENODEV) if the conn (4th) argument is NULL. Thus ret may be -ENODEV in which case the code in question will execute. Conclusion: * cp may be NULL at the point where this patch adds a check; this patch does seem to address a possible bug En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/rds: corrige la posible desreferencia nula de cp cp podría ser nulo, llamar a cp->cp_conn produciría una desreferencia nula [Simon Horman agrega:] Análisis: * cp es un parámetro de __rds_rdma_map y no es reasignado. * Los siguientes sitios de llamadas pasan un argumento cp NULL a __rds_rdma_map() - rds_get_mr() - rds_get_mr_for_dest * Antes del código anterior, lo siguiente supone que cp puede ser NULL (lo cual es indicativo, pero podría ser innecesario) trans_private = rs ->rs_transport->get_mr( sg, nents, rs, &mr->r_key, cp ? cp->cp_conn : NULL, args->vec.addr, args->vec.bytes, need_odp ? ODP_ZEROBASED : ODP_NOT_NEEDED); * El código modificado por este parche está custodiado por IS_ERR(trans_private), donde trans_private se asigna según el punto anterior de este análisis. • https://git.kernel.org/stable/c/786854141057751bc08eb26f1b02e97c1631c8f4 https://git.kernel.org/stable/c/997efea2bf3a4adb96c306b9ad6a91442237bf5b https://git.kernel.org/stable/c/9dfc15a10dfd44f8ff7f27488651cb5be6af83c2 https://git.kernel.org/stable/c/b562ebe21ed9adcf42242797dd6cb75beef12bf0 https://git.kernel.org/stable/c/998fd719e6d6468b930ac0c44552ea9ff8b07b80 https://git.kernel.org/stable/c/2b505d05280739ce31d5708da840f42df827cb85 https://git.kernel.org/stable/c/c055fc00c07be1f0df7375ab0036cebd1106ed38 https://git.kernel.org/stable/c/907761307469adecb02461a14120e9a18 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-35901 – net: mana: Fix Rx DMA datasize and skb_over_panic
https://notcve.org/view.php?id=CVE-2024-35901
In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix Rx DMA datasize and skb_over_panic mana_get_rxbuf_cfg() aligns the RX buffer's DMA datasize to be multiple of 64. So a packet slightly bigger than mtu+14, say 1536, can be received and cause skb_over_panic. Sample dmesg: [ 5325.237162] skbuff: skb_over_panic: text:ffffffffc043277a len:1536 put:1536 head:ff1100018b517000 data:ff1100018b517100 tail:0x700 end:0x6ea dev:<NULL> [ 5325.243689] ------------[ cut here ]------------ [ 5325.245748] kernel BUG at net/core/skbuff.c:192! [ 5325.247838] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 5325.258374] RIP: 0010:skb_panic+0x4f/0x60 [ 5325.302941] Call Trace: [ 5325.304389] <IRQ> [ 5325.315794] ? skb_panic+0x4f/0x60 [ 5325.317457] ? asm_exc_invalid_op+0x1f/0x30 [ 5325.319490] ? • https://git.kernel.org/stable/c/2fbbd712baf1c60996554326728bbdbef5616e12 https://git.kernel.org/stable/c/ca58927b00385005f488b6a9905ced7a4f719aad https://git.kernel.org/stable/c/05cb7c41fa1a7a7b2c2a6b81bbe7c67f5c11932b https://git.kernel.org/stable/c/c0de6ab920aafb56feab56058e46b688e694a246 •