cve-2024-36916
Vulnerability from cvelistv5
Published
2024-05-30 15:29
Modified
2024-12-19 09:02
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Summary
In the Linux kernel, the following vulnerability has been resolved: blk-iocost: avoid out of bounds shift UBSAN catches undefined behavior in blk-iocost, where sometimes iocg->delay is shifted right by a number that is too large, resulting in undefined behavior on some architectures. [ 186.556576] ------------[ cut here ]------------ UBSAN: shift-out-of-bounds in block/blk-iocost.c:1366:23 shift exponent 64 is too large for 64-bit type 'u64' (aka 'unsigned long long') CPU: 16 PID: 0 Comm: swapper/16 Tainted: G S E N 6.9.0-0_fbk700_debug_rc2_kbuilder_0_gc85af715cac0 #1 Hardware name: Quanta Twin Lakes MP/Twin Lakes Passive MP, BIOS F09_3A23 12/08/2020 Call Trace: <IRQ> dump_stack_lvl+0x8f/0xe0 __ubsan_handle_shift_out_of_bounds+0x22c/0x280 iocg_kick_delay+0x30b/0x310 ioc_timer_fn+0x2fb/0x1f80 __run_timer_base+0x1b6/0x250 ... Avoid that undefined behavior by simply taking the "delay = 0" branch if the shift is too large. I am not sure what the symptoms of an undefined value delay will be, but I suspect it could be more than a little annoying to debug.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240905-0006/
Impacted products
Vendor Product Version
Linux Linux Version: 5.4
Show details on NVD website

To clipboard 

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[186.556576] ------------[ cortar aqu\u00ed ]------------ UBSAN: desplazamiento fuera de los l\u00edmites en block/blk-iocost.c:1366 :23 exponente de desplazamiento 64 es demasiado grande para el tipo de 64 bits \u0027u64\u0027 (tambi\u00e9n conocido como \u0027unsigned long long\u0027) CPU: 16 PID: 0 Comm: swapper/16 Tainted: GSEN 6.9.0-0_fbk700_debug_rc2_kbuilder_0_gc85af715cac0 #1 Nombre de hardware: Quanta Twin Lakes MP/Twin Lakes MP pasivo, BIOS F09_3A23 08/12/2020 Seguimiento de llamadas:  dump_stack_lvl+0x8f/0xe0 __ubsan_handle_shift_out_of_bounds+0x22c/0x280 iocg_kick_delay+0x30b/0x310 ioc_timer_fn+0x2fb/0x 1f80 __run_timer_base+0x1b6/0x250 ... Evitar ese comportamiento indefinido simplemente tomando la rama \\\"retraso = 0\\\" si el cambio es demasiado grande. No estoy seguro de cu\u00e1les ser\u00e1n los s\u00edntomas de un retraso de valor indefinido, pero sospecho que podr\u00eda ser m\u00e1s que molesto depurarlo.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":2.5}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20240905-0006/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
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}


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